The First Son of Daqin

Travel through the world of the bright moon in the Qin Dynasty and become the fifth son of the First Emperor!
Yinggan: Father, give me your Heavenly Question Sword.
Ying Zheng: Yes, take it!
Yinggan: Father, give me Liji.
Ying Zheng: Yes, send it to you!
Yinggan: Father King...
Ying Zheng: Don't say it, it's alright...
Ying Zheng: Xiaogan, I, how is the biography for you?
Yinggan: No, it's annoying!
Yinggan: I am the first son of Daqin, and I will be the enemy of all Zhenya!
Hundreds of schools of thought, Baiyue, Xiongnu, Rome, etc.: Enen, you have the final say.
Introduction incompetent, inside please!