Ace Spy in Film and Television

"Gong Shu, Li Ya, Chen Ming, Yu Zecheng, Xu Zhongyi, Lin Nansheng, Qi Siyuan, Yu Xiuning, and Gu Yufei are all students I taught in the Guanwang Temple special training class." "Li Weigong, Wu Jingzhong, Zheng Yaoxian, Xu Baichuan, Wang Tianfeng and I are teachers of the special training class at Guanwang Temple." "Tan Zhongshu and Liu Xinjie passed through my hands." "Who am I?" "Me, they all call me Laojiu." "The Japanese people are always looking for a 'good wife'. I am the one." "Well, I also have a codename, which is 'Katyusha' they have been looking for."