Zombieland: I Have a Tomb of God

However, at this moment, a voice suddenly came from the side and reached the ears of Taoist Master Ma.

"Oh, I see, your ability to raise corpses is so strong that you can raise so many hairy zombies!"

Taoist Ma said in a sudden realization without coming to his senses.

However, the next moment, he was stunned.

Who was that voice just now!?

Then he turned around suddenly and found that Ling Xiao had come to his side without knowing when.

""Hiss, Taoist Ling Xiao! ? You, you, you… when did you come back! ?"

Taoist Ma was so frightened that he staggered and almost fell down.

"I came over when you were talking just now!"

Seeing the look on Master Ma's face, Ling Xiao immediately smiled.

To be honest, this person was indeed a little timid, but for the lives of the people around him, he came here alone even though he was afraid, which made Ling Xiao admire him.

This time, the matter was over, and it was also a relief for Master Ma. With his character, he should be able to save more people in the future!

"Ahem, sorry, let me, Taoist Ling Xiao, please forgive me!"

Taoist Ma also smiled awkwardly at this time.、

"The problems in Teng Teng Town have been solved! I think if there are no accidents, there will be no zombies here in the future."

Ling Xiao glanced at the Yin Qi that had begun to dissipate not far away and smiled.

Without the source of Yin Qi, the Yin Qi here will be diluted almost in a few days at most, and it will be completely dissipated in just a few months.

And with such a short time, even if a corpse is buried now, it cannot be cultivated into a zombie!

Therefore, there is no big deal.

Even the dark clouds in the sky gradually dispersed.

The sun slowly fell.

But now it is afternoon.

After all, Ling Xiao has been searching the ocean for too long.

"Has it been solved? ? Great, it's good that you are here this time, Taoist Ling Xiao. If it was Master Qinghai and Uncle Jiu, we would have come here without a chance to return!"

After hearing what Ling Xiao said, Taoist Ma was also excited, and said to Ling Xiao with some emotion.

His words were not flattery, it was true. Uncle Jiu and Taoist Qinghai were both very powerful, reaching the seventh level of earth master.

But the more than one hundred white zombies and more than ten green zombies on the ground were enough to give them a hard time, not to mention the huge zombie king that just flew out.

They would definitely not be able to return by then.

"There are so many zombies, even if you, my master, come, I will naturally follow you, and besides, your strength is not that weak!"

Ling Xiao said with a smile.

Of course, the one who is not that weak is Uncle Jiu.

Uncle Jiu is now at the seventh level of Earth Master. When he casts the Nine Star Divine Spell, his strength will definitely soar to the first level of Heaven Master.

With the old witch sealed in that place, there is naturally no problem in escaping!

As for the art of summoning gods, there is no other way. The art of summoning gods must be done near the ancestral hall, or you can bring the tablet of the ancestor that you have been worshipping for a long time.

Otherwise, you can't invite the ancestor!

Of course, what Ling Xiao said was naturally taken as a polite remark by Taoist Ma!

"In that case, Taoist Ling Xiao, let's go!"

Taoist Ma also smiled and said

"Well! If you are fine, then let's go!!"

Ling Xiao also nodded.

Then the two of them went directly to the direction of Yunling Town.

Going back naturally went at full speed, so soon they had returned to Uncle Jiu's hometown.

Taoist Ma did not stay any longer, after all, the Zhongyuan Festival was coming, and Taoist Ma was going to take his daughter back to Zhengyi Sect.

Because during the Zhongyuan Festival, it is not just Maoshan, but also the Zhengyi Sect and other Taoist sects will have a ceremony to celebrate the return of the ancestors. At that time, many disciples may be able to gain the favor of the ancestors and obtain powerful secrets.

You know, the secrets taught by the ancestors in 2008 Only the person who teaches can practice.

And every ancestor has only one limit on who he can teach.

That is to say, Uncle Jiu won the favor of the ancestor Zhong Kui, and then obtained the practice method of the Nine Star Divine Mantra, as well as the magic whisk.

But his whisk and the Nine Star Divine Mantra cannot be passed on to anyone.

If he dies and becomes a ghost messenger in the underworld, he will naturally be regarded as the ancestor of Maoshan.

At that time, if he takes a fancy to a younger disciple of Maoshan, he will only have one chance to choose whether to teach this disciple martial arts.

After choosing this disciple, he cannot Choose other disciples.

This restriction refers to ordinary Yincha ancestors.

After reaching the Yinshuai level, they can teach two or three times of martial arts, or weapons. When they reach the level of Wenwupan, they can teach at least five times, and when they reach the level of Panguan, there is no limit.

Therefore, every disciple who is favored by the ancestor is definitely the leader of this generation of disciples!

Even in several generations of disciples, there may not be a disciple favored by the ancestor.

This is also the main reason why it was said before that the cultivation method of Maoshan could not be continued after it was cut off.

It is not that the ancestor did not give the martial arts, but after giving it, only the person who gave it can practice it, and it cannot be passed on even if you want to pass it on.

After all, this is the rule of non-interference between the underworld and the world of the living.

Take the time when Ling Xiao gave Uncle Jiu the martial arts, although Uncle Jiu was very happy, he did not accept it at first. He asked clearly that the ancestor agreed to give it to him before accepting it.

Therefore, every year, as long as the Maoshan disciples who can join in the fun will basically go there. Taoist

Master Ma is naturally the same.

After talking to Uncle Jiu and the others for a few words, he went home!

"Zhongyuan Festival, I haven't been back for a long time!!"

After watching Taoist Ma leave, Uncle Jiu couldn't help but sigh when he thought of Zhongyuan Festival.

"Master, everyone else goes back to visit their ancestors during the Ghost Festival, why don’t you go back?"

"Yes, yes, I remember you haven't been back since you came to Renjia Town! ?"

Wencai Qiusheng spoke to Uncle Jiu curiously.

"We, the disciples of Mount Mao, go back to see our ancestor to gain his approval and pass down good things. Your master, I have already gained the approval of the ancestor Zhong Kui, so there is nothing to do when I go back. Besides, it is thousands of kilometers away from Mount Mao, so why would I go back if there is nothing to do?"

However, Uncle Jiu smiled and explained.

When he said this, the disciples around him were speechless.

Why is Uncle Jiu so arrogant?

"Hehe, you little brats don’t know that when your master inherited the legacy of Grandmaster Zhong Kui, he was so impressive that the three great ancestors were so excited that they cried!"

Zhe Gu also smiled nostalgically at this time.

"Even the founder of our Maoshan sect had not appeared for many years. During that period, he appeared in dreams every day and told your master to practice hard. The one who was most relieved was our eldest brother Shi Jian. After knowing that your master was favored by the founder Zhong Kui, he was so angry that he went out and didn't come back for two years.

He only returned to Maoshan after your master became a disciple."

Zhe Gu told all the deeds of Uncle Jiu in the past with admiration.

Wencai, Qiu Sheng and Chu Liu were all excited after hearing this.

"Master, tell me, if I went to the Zhongyuan Festival in Maoshan, would I be favored by the ancestor?"

""Yes, yes, and me, Master!"

Wencai and Qiu Sheng spoke excitedly to Uncle Jiu.

However, as soon as the two of them finished speaking, Uncle Jiu looked at them speechlessly.

"What are you two thinking about? To be chosen by the ancestors, one needs not only strong strength, but also some unique abilities.

For example, I am a genius in Tianshi Dao, and I can master the Dao very quickly.

Of course, ordinary ancestors did not see this. Only the ancestor Zhong Kui saw it, so he recognized me!

As for Chuliu, this is also possible, but unfortunately, Chuliu has just started practicing, his strength is too weak, and his control of the Dao is not strong.

So the ancestors probably won’t recognize him now, but it may not be the case ten or twenty years later!

As for you two brats, forget it!"

Uncle Jiu attacked the two without hesitation.

When they heard it, they smiled awkwardly.

"It's better to try than not to try, maybe it will work! ?"

Qiu Sheng smiled and said awkwardly

"It's not impossible. It's not bad to give it a try! Anyway, if we can rush to produce this batch of goods, there are still a few days before the Zhongyuan Festival!

Then I can take you to Maoshan to see the world!"

However, at this time, Ling Xiao smiled and spoke.

As soon as he said this, Wencai, Qiu Sheng and Chuliu's eyes lit up!

"Hmm? That's a good idea, but we'll need at least 20 days to get the goods we need for the Ghost Festival. By then, there will only be three days until the Ghost Festival. It's at least a thousand miles away from Maoshan, and I don't know how long it will take to get there."

Uncle Jiu also agreed with Ling Xiao's idea, but unfortunately there wasn't enough time.

"Yes, Junior-Martial-Nephew Ling Xiao, we are all exhausted now, how can we save extra time to come out?"

Aunt Zhe also sighed.

"Hehe, Master, have you forgotten? You still have it, right? I will leave you a few evil spirits to replace us brothers to input spiritual energy into the ghost money, and you just stay in the charity cemetery to stamp the seals by yourself!

Master's aunt will be responsible for taking care of you, and we won't disturb your world of two people.

Besides, if I can fly with the three of them with my current strength, I can reach Maoshan in one day at most!"

Ling Xiao smiled and spoke after hearing the words of the person who came.

But as soon as he said this, Uncle Jiu's face changed instantly.

Doesn't this mean that he should be with his sister for several days?

Hiss!!! Isn't this asking for his life?

Aunt Zhe's face was overjoyed.

"Ling Xiao, this matter���look……"

Uncle Jiu was about to speak

"It's settled! What nephew said is absolutely right, this is one of the few opportunities to see the Grandmaster! You guys must not miss it! What if the Grandmaster takes a fancy to you! ?

As for the task of taking care of senior brother, hehe, I'll leave it to you, your aunt!"

However, Uncle Jiu was interrupted by Aunt Zhe before he could finish his words. Uncle

Jiu swallowed back his words helplessly. He couldn't say that he disagreed. After all, this time was indeed a good opportunity. The next time would be next year.

Of course, the most important thing is that Uncle Jiu taught four disciples, so naturally he had to bring them back to show his uncles and ancestors. Of course, with Ling Xiao's talent and strength, his master would definitely be very proud.

This can be regarded as a good thing to return home in glory!

Although I can't witness it myself, I feel a little excited just thinking about it.

"Well, in that case, I'll leave the stamping to you before you leave!!" However,

Uncle Jiu still nodded in agreement, but he directly threw his Yin Qian Command Card to Ling Xiao.

Ling Xiao was stunned instantly.

Now there are still more than 20 days before they leave!

However, when he wanted to find an excuse, Uncle Jiu had already run away and no one knew where he was!

"You little brat, you still want to trick me, you are too young, just work overtime these few days!"

Uncle Jiu, who had already slipped into the ancestral hall, was naturally very proud!

But he didn't know that Ling Xiao, who was not far away, could hear his words!

""Oh, the master has tricked me! Damn!"

Ling Xiao was speechless as he held the token that had turned into a large seal. If he had known earlier, he would not have revealed that he could use Uncle Nine's token.

"By the way, Master, do you like my master?"

Suddenly, Ling Xiao smiled and spoke to Master Zhe beside him!

""Ah? What? Why do you say that, nephew?!"

However, after hearing Ling Xiao's words, Zhe Gu immediately started to act coquettishly and shyly!

This look made Ling Xiao's four brothers and sisters around him feel a chill.

No wonder his master looked down on his aunt. People always say that he has an interesting soul. This one is too interesting.

""Ahem, if you really like my master, starting tomorrow, we brothers will help you make a big transformation, and transform you into the way the master likes!"

Ling Xiao also coughed to ease the embarrassment, and then smiled and spoke!

However, when Ling Xiao's words came out, Wencai Qiusheng and Chuliu were stunned.

""What? Really? You can't lie to me!"

Zhe Gu's eyes lit up instantly when she heard Ling Xiao's words! She looked at Ling Xiao excitedly. If these words were said by Wencai, Qiu Sheng and the others, she would naturally not have any hope, but it was different when it was Ling Xiao who said them!

"Of course, and I mean what I say. As long as you pass my course, I guarantee that you will be loved to death by my master. So, come home, Auntie, and move your things here. You have been here recently!"

Ling Xiao's eyes flashed, and then he smiled and spoke to Auntie Zhe!

""Okay, okay, I'll go right away!"

When Zhe Gu heard this, she ran away excitedly!

"Wow, you are not the one!!"

"You want to help Master-in-law chase Master? If Master knew, would he be mad at you?"

Qiu Sheng and Wen Cai both spoke to Ling Xiao in disbelief after hearing what Ling Xiao said.

"I also think that Master and Master Aunt don’t get along!!"

Even Chuliu expressed his opinion.

Helping Master Aunt to chase Master? Isn’t this just dragging Master into the fire pit?

"I naturally have my own ideas about this!"

Ling Xiao did not explain too much.

Anyway, in the original novel, Uncle Jiu and Zhe Gu were a couple, and they even had a child. Instead of letting Uncle Jiu accept this wife painfully, it would be better for him to marry happily.

However, he naturally could not say this.

But his words did cause Wencai, Qiu Sheng and the other two to misunderstand.

The three of them immediately remembered that Uncle Jiu had just dropped the token and ran away!

"Poor master, he thought he had tricked the senior brother and made him busy for 20 days!!"

"Yes, it's a pity that I didn't know that my whole life would be ruined by my senior brother!"

Wencai Qiusheng immediately spoke with emotion!

"So that's what the eldest brother thought!

Chuliu, who was standing by, suddenly understood what they said. (To read the exciting novels, go to Feilu Novel Network!)

"Hey, hey, hey, what are you two guessing for? You're making me look petty. Do you want to be punished? Let's go. We still have 20 days of overtime to work!"

Ling Xiao rolled his eyes speechlessly after hearing what they said. These two brats really dare to think of anything.

Am I so petty?

"No, didn't you just say that you could find zombies or evil spirits to replace us? Why do you still need our help?"

However, as soon as Ling Xiao said this, Qiu Sheng became anxious.[]

It's so hard to rest because of myself!

"I didn't even rest, how can you rest! ? You're dreaming!"

However, Ling Xiao dragged the two brats with him and headed towards the old house.

No matter how the two struggled and begged for mercy, it was useless.

As for Chu Liu, he followed them obediently.

The four of them went in and worked from the afternoon to late at night, and then returned to their rooms one by one with tired faces.

Of course, fatigue naturally did not include Ling Xiao.

"Well, it's so comfortable to have a good sleep. Hey! Have you guys finished your work?"

However, when Uncle Jiu heard the noise, he immediately came out in a fake manner.

"Bang!!!!"

Suddenly, at this moment, the door was kicked open fiercely.

""Junior Brother Ling Xiao, I'm here!!!"

Then Aunt Zhe rushed in carrying large and small bags of things.

""Junior sister, why are you coming to my house so late at night? And what's wrong with your outfit?" Uncle

Jiu was speechless when he saw Zhe Gu wearing flowery pants and flowery clothes. What's more, Zhe Gu had put on a horrible makeup.

The three brothers Wencai and Qiu Sheng, who were exhausted after a day's work, were almost scared out of their wits!

""Oh, Senior Brother, I saw that you and your nephews were so tired, so I planned to make delicious food for you to replenish your body in the next few days!"

Zhe Gu blushed and acted coquettishly to Uncle Jiu. She certainly couldn't say that she came here because Ling Xiao said he would help her pursue Uncle Jiu.

At the same time, she winked at Ling Xiao.

Ling Xiao also smiled.

"You cook delicious food for us!? Forget it, your cooking skills are worse than mine!"Uncle Jiu rolled his eyes speechlessly when he heard it!"

He has already said it very tactfully, the food cooked by Aunt Zhe is simply inedible

"What do you mean, Lin Fengjiao? I came to take care of you with good intentions, but you didn't appreciate it! And you said my cooking is not delicious?"

However, when Zhe Gu heard Uncle Jiu's complaints, her face changed immediately.

""Okay, okay, come on, come on!" Uncle Jiu was immediately startled and nodded quickly.

As expected, as soon as he said this, Zhe Gu's face became shy again.

"Hey, brother, if you wanted me to come over, you could have just said no earlier. Here I come!!"

Zhe Gu said this in a coquettish manner and rushed directly towards Uncle Jiu.

"Oh my god, Junior Sister, you misunderstood! If you want to live here, just find a place. And go and wipe off your makeup first. It would be bad to scare others in the middle of the night!"

Uncle Jiu quickly dodged and said speechlessly.

"Oh, I see!!"

Zhe Gu saw that Uncle Jiu was still avoiding her and nodded unhappily, then picked up her things and left with her mouth pursed.

"I think it would be good for Master to come and take care of us, after all, we are still very busy these two days!"

At this time, Ling Xiao also spoke with a smile!

"Yes, yes, yes, Senior Brother is right!"

"Yes, I agree too!"

"I also think it's a good idea for Master to come!"

Qiu Sheng, Wencai and Chu Liu also held back their smiles and nodded repeatedly.

"Why do I feel like things aren't that simple! ?"

However, Uncle Jiu narrowed his eyes and found something wrong!

As soon as he said this, the brothers were all shocked.

Ling Xiao also quickly put on an expression that said,"It has nothing to do with me."

"Humph, it must be you two brats, Wencai and Qiu Sheng, who are behind this! I wonder if you have done something good for your master-in-law to speak to her!"

Fortunately, Uncle Jiu looked directly at Wencai and Qiu Sheng.

As soon as he said this, Wencai and Qiu Sheng became anxious.

"Cough cough!!!"

However, Ling Xiao at the side coughed twice, and the two of them immediately felt like crying but had no tears.

"Wow, Master, you are really a genius. You know that Master just admires you!"

"Yes, yes, Master, I feel pretty good!"

Wencai Qiusheng could only tearfully take the blame for Ling Xiao.

Who made Ling Xiao clean up the mess they made?

"I knew it was you two brats. This is no joke. It concerns your master's innocence. Don't interfere in the future!"

Uncle Jiu immediately glared at Wencai Qiusheng fiercely.

The two could only nod their heads repeatedly.

""Okay, let's go back to sleep!!"

Uncle Jiu then gave a few instructions and went back to the room.

Before leaving, he took the seal from Ling Xiao.

He was just teasing Ling Xiao. Of course, it was impossible for Ling Xiao to stamp it every day, and for twenty days.

Unfortunately, he didn't know that he had decided to marry Zhe Gu as his wife.

In fact, Ling Xiao could just find a good one for Uncle Jiu.

But looking at Uncle Jiu's confidantes in the movie, or those who like Uncle Jiu, they are either ghosts or married.

Only Zhe Gu is the most normal.

Moreover, Zhe Gu is not bad, but her image and personality!

Personality is difficult to change, Ling Xiao is not going to change it, but the image can be solved easily. As for makeup skills, can't you just take it to the town to find a few bosses to learn it? ?

But these are things for the future. Now the most important thing for Ling Xiao is to improve his realm first!

After thinking of this, Ling Xiao returned to the room and his consciousness directly entered the God's Tomb space! In the

God's Tomb space, the ground was full of corpses at this time, and these���The ones with the most corpses are all white zombies!

This is Ling Xiao burying so many corpses at one time!

"The system said before that the more zombies you bury at one time, the more precious the special rewards you will get! This time, we have trained four-star zombie kings, I wonder if there will be a legendary reward!"

Ling Xiao is looking forward to it!

"However, after this burial, I will have two chances to merge! But if I want to merge, it seems that it is best to upgrade the level of the God's Tomb first, right? Then the fused existence should be more powerful!"

Ling Xiao thought about this and decided to merge and bury first, and then use the oceans obtained from the burial to upgrade the God's Tomb, and finally merge all the zombies.

Do it right away!

System, merge and bury all the zombies for me!

Ling Xiao did not hesitate and spoke directly to the system.

"Ding...Receive the command, start burying!!!"

The system also responded to him quickly.

"Buzz!!!!"

The next moment, the ground in the entire God's Tomb began to crack crazily!

This time, the number of cracks reached more than a hundred..

"Buzz!!!!"

Then, in a wave of movement, all the zombie corpses slowly flew up.

One by one, the zombie corpses slowly fell into their respective graves.

"Buzz!!!!! :

After another wave of vibrations came, the entire tomb slowly closed up.

"Ding... Congratulations, you have buried 142 white zombies, gained experience points: 71,000, and gained oceans: 71,000!"

"Ding... Congratulations, you have buried green zombie 14, gained experience points: 32,000, and gained oceans: 32,000!"

"Ding... Congratulations, you have buried 12 hairy zombies, gained experience points: 75,000, and gained oceans: 75,000!"

"Ding... Congratulations, you have buried a four-star zombie king, gained experience points: 40,000, and gained oceans: 40,000!"

…………

…………

As the prompts came one after another, Ling Xiao's experience points soared to 220,000. As for the oceans, plus the more than 400,000 before, it has reached 690,000.

It is enough for Ling Xiao to level up!

""Boom boom boom!"

Suddenly, the Yin Qi in the whole sky began to surge wildly at this moment.

Then, over the hundreds of zombie tombs that had just been buried, endless dark clouds gathered wildly.

Then, the Yin Qi in the sky poured down to the ground like a flood.

All the Yin Qi quickly poured into all the tombs, and each tomb instantly erupted with terrifying power!

Ling Xiao could clearly feel that the strength of each zombie was increasing wildly.

Even the corpse of the old witch who was a four-star zombie king was rapidly becoming more powerful.

Unfortunately, because the old witch's realm was very unstable, after all, she was forcibly promoted to a four-star zombie king. Therefore, a hundred years of corpse Qi was not enough to raise her realm to a small realm!

At the same time, the realm of the first level of the zombie king requires at least 500 years of corpse Qi.

And the second level of the zombie king requires 600 years. And so on, to raise a small realm...���It takes 100 years of corpse energy to reach the realm of a five-star zombie king. However, after reaching the realm of a six-star zombie king, it takes at least 200 years of corpse energy cultivation. That is to say, it takes at least 2000 years of corpse energy to reach the tenth level of zombie king!

However, the corpse of the old witch was forced to reach the realm of a four-star zombie king. It was good that she did not fall back after her death.

So a hundred years of corpse energy only stabilized her realm and raised her realm to the peak of a four-star zombie king.

"Ding... All your zombies have received the blessing of 100 years of corpse qi from the God's Tomb!

All white zombies have been upgraded to the early stage of hairy zombies!

All green zombies have been upgraded to the middle stage of hairy zombies!

8 of the 12 hairy zombies have been upgraded to the late stage of hairy zombies, 3 have been upgraded to the top stage of hairy zombies, and 1 has been upgraded to the peak stage of hairy zombies!

The four-star zombie king has been upgraded to the four-star peak zombie king!"

A prompt sound also reached Ling Xiao's mind at this time.

"Although it has not reached the fifth level, it should be able to upgrade after being buried in the soil for more than a month. Besides, I will upgrade the God's Tomb later, and then I can at least add another 400 years of corpse power!"

Ling Xiao smiled with satisfaction when he thought of this. After all, the four-star zombie king itself is a pleasant surprise.

"Buzz!!!!!!!"

However, at this moment, a wave of vibration came directly from the endless void.

""Swish!!!"

The next moment, this wave of energy directly poured into Ling Xiao's body.

Instantly, Ling Xiao's figure began to flicker. That's right, it flickered, flashing on and off in the same place.

"Buzz!!!!"

Suddenly, Ling Xiao disappeared from the spot, and when he reappeared, he was already several kilometers away from the God's Tomb!

"Buzz!!!!"

There was another wave of fluctuations, and Ling Xiao disappeared again. Then, Ling Xiao began to teleport madly throughout the God's Tomb at an extremely terrifying speed.

"Ding... Congratulations to the host, you have obtained the Merge Burial Reward: Teleportation Power (Top Level)"

Just as Ling Xiao's teleportation speed gradually subsided, a prompt sound suddenly came into his mind.

After hearing this prompt sound, Ling Xiao suddenly opened his eyes!

"Buzz!!!!"

The next moment, the teleportation power was activated again, and he returned directly to his original position!

"The power of teleportation, I didn't expect that this time I would get this kind of top-level power of heaven and earth!"

Ling Xiao was shocked!

The power of teleportation gives Ling Xiao the ability to teleport, but at present, Ling Xiao's true energy content can only teleport within a range of ten kilometers around him!

And it is the kind that can be reached instantly.

Although it is only ten kilometers, it is already a god-level skill that defies the heavens.

You can imagine that a person who fights with you can't hit the opponent no matter how fast you are, and the attack can always disappear directly.

And the moment the opponent attacks you, you have to dodge first, but you can't dodge at all.

In this case, what suspense is there in the battle!?

Being beaten is absolutely normal.

This is true even if your strength is much stronger than the opponent.

Of course, if it is too strong, so strong that the opponent can't break your defense at all, it doesn't matter, anyway, you can't catch up with the opponent!

In this way, although it did not increase any of Ling Xiao's strength or soul power, it made Ling Xiao's combat power soar by more than ten times.

Now he is a Taoist, and it is impossible to kill Ling Xiao