# Introduction to the work
When he woke up, Xu Sihan became Zhao Kuo.
It's still the same Zhao Kuo who just succeeded Lian Po and is about to die in Changping.
The good news is, he knows the history.
He knew that the Qin army had secretly changed generals, and he knew how Bai Qi would lure the enemy, cut off food, and push the 400,000 Zhao army into a desperate situation step by step.
So the first thing Xu Sihan did was not to follow history.
But what he didn't know was——
In reality, his friend who knew more about history than he did and who argued with him about the Battle of Changping last night also traveled through time.
And he became Bai Qi.
Xu Sihan wanted to change history.
But Zhou Heng just wanted to copy history.
One knows how Zhao Kuo will lose.
One who knows how to win Bai Qi.
When two time travelers stood on the Changping battlefield at the same time, the history that had been written was completely messed up.
