The Head of the Li Family

The overlord of the world of immortality; the Li family. In order to choose a suitable successor, Patriarch Li held a cruel competition among his three sons. Only one person can survive this game and become the heir of Patriarch Li. The protagonist Li Tingchen was originally an ordinary office worker on Earth, but he suddenly died due to overtime work and time traveled to the third son of the Li family. Facing the difficulties of his two brothers, he was originally at the bottom of the game, but he got the system before the end of the game. How should he counterattack? How to become the head of the Li family? Where will it lead the Li family?