C669 Exchange Positions(2)

Yun Bai smiled and said, "Why are you suddenly so enthusiastic?"

Bai Chengcheng said, "Come back and study. You are right. I am too arrogant. My foundation is too bad and I don't know it."

"Are you crazy?" Yun Bai scolded with a smile, "Learning and research are my business. You just have to focus on protecting me."

"Protect me?" Bai Chengcheng also laughed, "You are thinking too much