Pei Jichen, a modern business prodigy, was unexpectedly reborn in the prosperous age of the Tang Dynasty, but became the son-in-law of a notorious family. His wife is the legitimate daughter of the Bolingcui family, one of the five surnames and seven hopes. She is a frosty and peerless beauty. Within the family, relatives are fighting against each other, openly and secretly; outside the family, powerful enemies are waiting around, and crises are everywhere. Faced with this hellish start, Pei Jichen relied on his knowledge and skills that transcended the times. Starting from a small son-in-law, he stirred up the situation in Chang'an, step by step, and finally reached the top of the first rank, becoming a legend. He wants everyone who looks down on him to understand that even a son-in-law can turn his hands into clouds, turn his hands into rain, and control the world.