Zhang Ruihan and Lei Jiayin are classmates. According to relevant public information, Lei Jiayin, Zhang Ruihan, Wang Yang and Salina were all taught by the same performance teacher at school. Salina jokingly counted Lei Jiayin, Zhang Ruihan and Wang Yang as "big teachers". Zhang Ruihan and Lei Jiayin are two of the six gentlemen in the world. The six gentlemen are Zhou Bingkun played by Lei Jiayin, Cao Debao played by Zhang Ruihan, Xiao Guoqing played by Wang Daqi, Sun Chongchao played by Song Chuyan, Lu Chuan played by Gong Hongchuan and Tang Xiangyang played by Miao Chi.