Donnie Yen vs Collin Chou Flash Point End Fight (Video) 2 discussions Flash Point (2007), aka City Without Mercy, The Signal, end fight! Starring: Donnie Yen Chi Tan, Louis Koo Tin Lok, Collin Chou Siu Long, Ray Lui Leung Wai, Xing Yu, Fan Bing Bing, Kent Cheng Jak Si,.. Tags: Donnie Yen Collin Colin Chou Sing Ngai Flashpoint Flash Point City Without Mercy SPL Sha Po Lang UFC WWF WWC JKD