C238 Little Brother and Xin Look like Each Other!

After Chi Xi wrote the problem on the small blackboard, he asked his sister to solve it.

The camera mostly focused on Little Ruixin, ensuring his face wouldn't be revealed. He lounged lazily in the chair, resting his head on his hand as he watched his sister work through the problem.

"Is this problem easy for you, Xin?" he asked, surprised at her fluid writing without any hesitation