It opens with guys dumping a coffin from a boat into shallow water. It washes up on shore. The body has fallen out and comes up fighting. There is an abrupt cut to a fight in a martial arts school. Pai Ying gets an important phone call but nothing is said. Mr. Big talks things over with his girl.Paul Chun Pui has one of the longest careers in Hong Kong movie history, from 1949 (as a five year old child) to 2018. He was another of the many established dramatic actors with no martial arts skills cast as martial artists during the golden age of martial arts movies from 1967 to 1984.Today this movie would only draw the attention of a hard core fan (like me) of the genre's golden age. My copy is a multigenerational copy that has lost most of its color and resolution. The dialog is Chinese and the subtitles are English and another language I can't identify but resembles Arabic script. The resolution is so poor I doubt the script is readable. This poor condition is something hard core fans of the genre have come to accept. In the 1970s movies were disposable entertainment that had no value after the theatrical run ended. This movie would have been on five large film reels about the size of large pizzas. Sometimes the reels were returned to the production companies but even then they were just put on a shelf somewhere. Otherwise the last theater on the circuit either had a shelf in the rear or a garbage can out back for the reels.This is an early gangster movie. All the fights, even in the martial arts schools, are basic fist fights. The only difference is adding judo throws. The gangsters also have guns which are okay gun versus gun but become problems gun versus fist. The big final fight takes up the last ten minutes. The runtime seems long but is only seventy minutes. I rate is as just average for the year and genre.