As long as Timothy Greene failed to do what Mrs. Gu asked, Timothy Greene would be punished and shut up in a small black room, without lights, windows and any light.

Once, the exam was very difficult. Timothy Greene didn't get full marks, just 0.5 points short, but he was still the first in the city.

However, Mrs. Gu was still dissatisfied, and once again locked Timothy Greene in a small black room to let him reflect.

Timothy Greene didn't reflect as before, but began to ...