I was the emperor in the Ming Dynasty

Chapter 930 Three-stage Centrifugal Lock

This pitch-black secret passage is displayed in front of everyone like a giant python that chooses and devours people, making people who see this place for the first time shudder.

Especially Wang Cheng, a man with poor martial arts and courage, even took a step back unconsciously.

Seeing his cowardice, Cao Ran snorted softly,
"What are you afraid of? There are no lions and tigers in it, so they can still eat you!"

After speaking, he took the lead and walked down first.

Taking advantage of Cao Ran's absence, Yang Suwen patted Wang Cheng's shoulder lightly, and whispered to him,
"Don't be afraid, we have already made full preparations, it's okay!"

Yang Suwen's consolation finally gave Wang Chengxin his heart. He took a deep breath and followed the crowd.

Because this secret road is built under Xuanwu Lake.

In order to prevent water penetration, there must be a certain depth.

Xuanwu Lake was originally three or four meters deep, but this secret path is still a few meters below the bottom of the lake, which shows how deep it is.

For modern people, digging a tunnel out of such a deep place is not an easy task.

The ancients had only their own hands and the simplest tools, but they were able to achieve this level. From this point, we can see how powerful the craftsmen were in ancient times.

Cao Ran, who was walking in the front, seemed to have touched some mechanism, and clusters of flames suddenly lit up from both sides of the passage.

The entire passage was finally no longer pitch black, and nothing could be seen clearly.

Yang Suwen squinted his eyes and carefully observed those oil lamps that suddenly lit up.

He was quite sure that Cao Ran didn't have any kindling in his hand, and he didn't even try to light a lamp just now.

But the flames still popped up all of a sudden.

This can only show that this string of oil lamps is actually an exquisite mechanism.

As we all know, as long as it is burning, it is specified that oxygen is required.

In places like underground tunnels where the air is inherently thin, it is actually a very dangerous thing to ignite many lights.

It may easily cause oxygen scarcity and carbon dioxide and the like to increase.

But after careful observation, Yang Suwen found that the brightness of these oil lamps remained consistent and did not appear to be weakening.

That is to say, there must be a ventilated place in this secret passage.

Moreover, there is a great possibility that there have been people living and hiding here all the time.

Without a complete air circulation system, the people hiding in the secret passage would have been suffocated to death long ago.

The reason why Yang Suwen and others haven't done anything until now is that they haven't discovered where the ultimate insurance that Cao Ran said is exactly.

They still have to exercise restraint until they fully figure it out.

However, Cao Ran's ostentatious behavior and the peculiar ventilation of these oil lamps made Yang Suwen see a little way.

He found that there is actually a small hole for ventilation behind the lamp socket of each oil lamp.

And these small holes are connected by copper pipes embedded in the wall.

These small holes will automatically fill the lamp with oil when the lamp is out of oil.

Instead, it becomes a tool for ventilation when injection is not needed.

If a person has a strong spatial geometric memory ability, he only needs to distinguish clearly the divisions of these oil lamps and the connection of the ventilation pipes behind them.

It can be quickly locked, the place in the secret passage that is really connected to the outside world.

And this place needs to be ventilated, so it must be the weakest place in the entire secret passage.

That's where they practice ultimate insurance.

As long as you find this place, you can basically confirm where the person who destroyed the secret road and diverted the water from Xuanwu Lake to hide in case something goes wrong.

This design method, in the eyes of ordinary people, is indeed an extremely secretive and simple and convenient method.

But in the eyes of experts, it is actually very easy to see through.

But even if you see through it, so what.

Even if they are blatantly telling you the location of the general agency, in front of this kind of situation where they can wipe out all the intruders as long as they move their fingers.

Whether you can see through all of this is actually irrelevant.

It is precisely because of the existence of this ultimate deterrence that the guards at the entrance above are so comfortable, and they are not afraid of someone breaking in to make trouble.

But at this time, Yang Suwen has already seen through the biggest threat in the secret path, and now he only needs to wait for the right time to take action.

Secretly communicate with the players to get them ready.

After getting their response, Yang Suwen quietly moved a little closer to Cao Ran's position.

Because the destination of their trip is about to arrive, which means that the time to do it is coming soon.

This channel is long, but not very long, and short, it is not short. The overall length is at least 60 meters.

If the yard width of one family is 20 meters, this length is enough to span three families.

At the end of the passage is a thick gate made of fine steel.

The traces of riveting on it are still obvious, but it is polished very smoothly. It can be seen that the craftsmanship of this gate is also extraordinary.

There is a keyhole in the middle of the gate. That hole is very different from the general keyhole. It is not flat, but cross-shaped.

As we all know, the original ordinary locks are all flat. When unlocking, you only need to push the clip spring in one direction to the appropriate position to open the lock.

The cross-shaped lock, in terms of quantity, has three or two more faces than the flat lock.

In this way, the difficulty of unlocking has increased exponentially.

And when Cao Ran took out the strangely shaped key from his bosom.

Yang Suwen's eyes froze suddenly, and he secretly rejoiced in his heart,
"This lock is actually a three-stage centrifugal lock. Unexpectedly, this Ma Dazhong, in order to avoid people stealing his money, actually played tricks on a lock."

The so-called three-stage centrifugal lock.

In fact, it is not very complicated to explain.

The so-called three stages actually mean that three steps are required to open the lock. As long as one step is wrong, the entire lock cannot be opened.

Brother, for example, the first section is the most common cross-row lock, as long as the key is inserted, it can be turned by pressing the spring.

In the second paragraph, the key needs to be rotated to an appropriate angle before proceeding to the next step.

The last section is also the hardest of the three.

It needs to cooperate with an extra delicate mechanism on the key to complete the final unlocking process.

If the design of this lock is a bit frenzied, it is completely possible to add nine or more confusing options in the process of these three paragraphs.

(End of this chapter)