After I Die, Another World Makes Me Stronger

Qin Mo, a social animal, died suddenly while working overtime. When he woke up, he found that he was reborn in a different world of swords and magic, and was bound to the [Waste Counterattack System]. As long as you complete the tasks issued by the system, you will continue to become stronger. But the question is - why are the rewards in this system always tied to his shame?