Qin Yanxi picked up a pen and sketched a diagram on his draft paper. "Look, the key here is to understand..."
Just then, the library doors pushed open, and Shen Jingyan walked in with one hand in his pocket.
At a glance, he spotted the two figures sitting extremely close by the window—Jiang Shengyan was listening intently as the boy beside her explained something, their heads almost touching.
Chapter 30