Death Duel of the Mantis
A Kung-Fu master trains a young man who is out for revenge, applying his acrobatic and animal-style Kung-Fu moves.
Starring Lung Fei, Mau Ging-Shun, Ting Wa-Chung
Watch "Death Duel of the Mantis" from streaming services Tubi TV, Amazon released in 1978. It's a action & adventure and comedy movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.