The Mysterious Heroes
Mysterious Heroes centers around Lau Tien, master of the deadly 13-Sword Style. Thrown into prison by a group of jealous enemies, the 13-Sword Style is rarely spoken of, let alone seen, until 20 years later, when a second swordsman going by the name of Lau Tien proves to be the world's second 13-Sword expert. Action-packed martial arts chaos ensues when the enemies of the original Lau Tien vow to destroy his successor
Starring Polly Shang-Kuan Ling-Feng, Chin Kang, Cliff Lok, Carter Wong, Phillip Ko, Wang Hsieh, Sek Kin, Chang Ma, Han Chang Hu, Teresa Ha Ping
Watch "The Mysterious Heroes" on Amazon released in 1978. It's a action & adventure and action movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.