C778 Train Problem

After everyone left, Yang Chenxuan asked Hsu Lei, "Prof. Hsu, why aren't you willing to accept this mission?"

Yang Chenxuan asked this question even though he knew the answer. Furthermore, Yang Chenxuan felt that Hsu Lei was a bit too much on this point. It could even be said that he was "aloof and aloof."

Now Yang Chenxuan wanted to pull Hsu Lei into the quagmire step by step