It is based on the historical facts of the Warring States Period. Some people say that history is the reincarnation of names and events, but for them and us in the long history, there is only one life. The so-called life, I believe, is that there is no good or evil, no getting what you deserve, only the established reality;
If you make a mistake, you will regret it forever, and if you look back, it will be a hundred years later. Facing the torrent of fate, we are like the clay dolls and puppets in "Zhuangzi". We can only choose our own material, but cannot choose whether to be swept away and have nowhere to stay...