This is the deepest diving Martial Arts/Fighting Arts movie ever made. Actor/Stuntman/Writer/Director Bruce Li (Hรฉ Zลngdร o) does a fantastic job of exposing the dark underbelly of the Wu Lin/Wu Xia Cinema tradition.
Though I prefer some other artists in certain roles (Yuen Siu Tien as "Beggar So", or Sammo Hung as "Dirty Head", Kwan Tak Hing as Wong Fei Hung, Hwang Jang Lee in anything, for instance, Bruce Li shows, in this movie, how high one man can set the bar.
Dark, dirty, gritty as a mouthful of coffee grounds. All that, and Danny Inosanto, too, the Chinese Stuntman is the one irreplaceable film* in a Kung Fu fan's archive.
*Other than "The Victim", "The Kung Fu Odd Couple", "Dance of the Drunken Mantis". and "Secret Rivals".