The bigger show off.

She didn't go to their bedroom first but went to the twins room. In there, she found Wu Gang still sketching and Wu Wei reading from one of the English textbooks she had bought for them. 

She barged in so suddenly that the twins were caught off guard. They reacted rather unusually with Wu Gang hiding the sketches under his bed while Wu Wei for some reason hid the English text book as well. 

The two were sitting on their individual beds which were on opposite ends of the room. Each side was decorated differently, showing the individual styles of the two brothers. Wu Gang's side of the wall was painted black because it was apparently his favorite color while Wu Wei's side was blue. 

They had individual closets and cabinets. The only thing they shared was the bathroom.

"Sister, what are you doing in here?" Wu Wei asked.