One day, Yang Ling obtained something called the Space-Time Exchange.
Here, he can exchange his intelligence, information, items and other people for something else.
And so do others.
So...
Qin Shihuang: "I want to know what will happen when Xu Fu goes to sea to find the elixir of life. Who wants to trade with me?"
Yang Ling: "Take out your Tai'a sword and I'll tell you."
Li Yuan: "I want to know the future information of my Datang. Who will trade with me?"
Yang Ling: "Okay, I'll provide it for free."
Li Yuan: "Why?"
Yang Ling: "Because I also provided this information to a boy named Li Shimin."
Dragon King of the East China Sea: "I want to know what disaster will happen to me in the future. Who wants to trade with me?"
Yang Ling: "Give me your sea-fixing needle, and this disaster will disappear."
Leader Tongtian: "I want to know, what is the future of my religion?"...
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.