When at home of my classmate Mr. Duan Yongping, the boss of BuBuGao enterprise, The middle one is Permanent Director of Psychology Department in UC Berkeley Professor Peng Kaiping.

• 在同学步步高老板段永平先生的家里，中间是加州柏克莱大学的终身教授心理学系主任彭凯平先生。