Zhong Kou Wei - 2013 is rated/received certificates of: Singapore:R21
Ai o kou hito - 1998 is rated/received certificates of: Australia:R
Wo kou de zong ji - 2011 is rated/received certificates of: Singapore:PG South Korea:15 USA:PG-13
Bu kou niu de nu hai - 1994 is rated/received certificates of: Hong Kong:III Singapore:(Banned)
Tian tang kou - 2007 is rated/received certificates of: Australia:MA Canada:14A Finland:K-15 Hong Kong:IIB Netherlands:16 Portugal:M/16 Singapore:NC-16 USA:R
Shinsei toire no Hanako-san - 1998 is rated/received certificates of: South Korea:12
The cast of Bai cu shi fu kou cu tou - 1979 includes: Bing Chan Cheung Hsi Chang John Cheung Wah Cheung Kam Chiang Kang Chu Siu Hung Cham Chih Hung Ling Yuen Kao Jang Lee Hwang as Lo Fei Lung Chen Chi Mi Min Min Ke Ming Lin Mei Sheng Fan Fei Tsai
The cast of Qiang kou xia de xiao bai he - 1982 includes: Paul Chang Kan Che Feng Chin Ching Feng Chiang Brigitte Lin as Lily Fei Lung Peter Yang
The cast of Shou kou - 1979 includes: Philip Chan Chok Chow Cheung Lun Hua Bill Lake Lieh Lo Nora Miao Yasuyoshi Shikamura Ching Tang Kei Ying Cheung
The cast of Aolei Yilan - 1979 includes: Zhenghai Kou as Aobuku Yuhong Zhang as Aolei Yilan Xinghuo Zhong as Xierqiyi
"Kou" means "Happiness"If you mean kou as in the hiragana こう it means:"this is how"If it is any other kou it may differ.
Zhenghai Kou's birth name is Kou Zhen Hai.