Reverse System for Son-In-Law: Kneel Down and Press the Secret Code of the Richest Man

The world's richest man is under house arrest, and undercurrents are surging in the underground world. Everyone thought I was a useless son-in-law, but they didn't know that the humbler I was, the more invincible I became. When I knelt and mopped the floor and casually dialed out the richest man's distress code, the fate of the entire world was held in my knees.