When others travel through time, they are cheating by changing the world. Lin Shi traveled through time and had to come back to wipe others' butts. In ancient times, he had a knife held to his neck, but someone stuck it in his face. In modern times, he eats contracts and screws up a five-million-dollar deal. Therefore, the scariest thing about time travel is not not being able to come back. But when you cross time and become someone else - others also cross time and become you. Life-saving in ancient times, life-saving projects in modern times. And next time he opens his eyes, who will he be? Who would take over his body to make a fortune, get into trouble, and take the blame... Until Lin Shi opened the notebook left by his parents. It says: Timing will · π law. Only then did he realize that the bronze mirror was not an accident. He himself is the planned project.