I Am an Outlier in the Gold Realm.

This is a story about a boy with severe chubby disease who thought he was playing an RPG game, but was actually robbing tombs. He led a group of teammates with persecution and paranoia to create crazy troubles in the underground world. Others rely on Luoyang Shovel and inheritance to get off the ground, while the protagonist relies on "system" and "serious nonsense" to get off the ground.