Hitman in the Hand of Buddha
A country bumpkin arrives to help his brother's rice business. Things get out of hand while a rival company becomes corrupt. The bumpkin, an ace martial artist, fights off the rivals. Angered, the rivals hire a martial arts expert to fight the hero, only to get beaten up himself. The expert send his teacher to hurt the hero and succeeds. The hero is sent to a temple where he learns a new style of kung fu. Now with the skills, our hero is ready to get even.
Starring Hwang Jang-Lee, Eddy Ko, Tino Wong Cheung, To Siu-Ming, Gwok Yin-Yin, Fan Mei-Sheng, Au-Yeung Yiu-Yam, Bruce Jang Il-Sik, Kim Yu-Haeng, Kwak Eun-Kyeong
Watch "Hitman in the Hand of Buddha" on Amazon released in 1981. It's a action & adventure and action movie, and has a rating of 6.2 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.