When Huang Yu fell to the dock with his ribs broken by the Black Panther Gang, he never thought about living, let alone having brothers. But after the "underworld order system" was activated, the first person who rushed over to help him block the knife was Ali, a dock worker, and the one who chipped in to buy him medicine was Aunt Li's son who sold breakfast. Even though they were surrounded and suppressed until there was only one way left, the brothers still clutched their knives and shouted, "Brother Yu, we will fight with you!" The system can exchange fighting skills, but it cannot exchange for life-long friendship; it can provide an escape route, but it cannot be separated from brothers. From two or three people pooling money together to buy self-defense sticks, to dozens of brothers following him to follow the rules and conquer the world, Huang Yu relied on the system to make a living and win people's hearts with loyalty. When he finally established a foothold in the city and earned prosperity, what he was most proud of was never the title of "Master Yu", but the fact that he could look back and see a group of brothers, smiling and saying, "Brother, it's time for us to drink this wine"!