I recommend "I'm grinding proficiency in the cultivation world". The protagonist was trapped in a mine to mine as soon as he transmigrated. He was forced to mine day after day without being paid. He was forced to grind his mining proficiency to the beginner level of Traveling, and he wanted to escape from this damn place at all times. However, the supervisors were like wolves and tigers. They were even equipped with small leather whips. If they were caught, they would laugh. I hope you like this fairy's recommendation. Muah ~๐