Cause of injury. According to the query of exo's new song Lotto, Kay's leg was injured, which was not conducive to his resumption of singing, so Zhong Ren did not participate in the subsequent singing. Korean men's pop singing group started its activities in the form of nine members: Jin Minshi, Jin Junming, Bai Xian, Kim Dae-jung, Park Chang Ye, Du Jingzhu, Kai, Shi Xunhe.