A Universal System, but I Can Only Study with Peace of Mind?

In a new era where the system no longer belongs to a few people, Yu Sheng, an ordinary high school student, was lucky enough to obtain the system. But why is the style of this system so weird? He must study hard and make progress every day? Just study hard, other people's systems can add attributes and skills, why is mine just a lottery, and the prize pool is all literary works?