The Warring States Period: Beginning with the Assassination of Ying Zheng

At the end of the Warring States Period, Prince Dan of the Yan Kingdom traveled back in time from modern times, only to discover that the taciturn little follower beside him was actually Ying Zheng, the first emperor of Qin who would conquer the world in the future. On the one hand, he is a mortal enemy destined by history, and on the other hand, he is a young man who is obedient to him at the moment, with admiration in his eyes. Prince Dan's hand holding the dagger trembled - should this future tyrant be terminated early? In the end, he chose to take a gamble. "As long as the Yan Kingdom is destroyed, Ying Zheng will always be a minister of Yan." He used modern knowledge to reform the Yan State, annexed Liaodong, attacked the Xiongnu in the north, and forged the weak Yan State into an iron-blooded lion. When the Qin army pressed on the border, Prince Dan stood on the bank of Yishui and looked at the commander of the Qin army in black armor opposite him - the young man who had blocked his arrows and warmed his hands had now grown into a king who looked down upon the world. "Ying Zheng, you owe Yan Guo your life." Will this revenge across time and space rewrite history, or make the reincarnation of fate more tragic?