It was a martial arts movie called " The Undefeated Swordsman ", which was released in 1960. It was directed by Hong Kong director Lee Shau Kee and starred Andy Liu, Zhou Yong, Lu Liangwei and others. The film was about three martial arts masters, the sons of the Huashan Sect's leader, who had a fierce battle in the martial arts world. At the same time, it also exposed the darkness and corruption within the martial arts world. The film was known for its superb martial arts direction and gorgeous visual effects, and was hailed as one of the representative works of Hong Kong martial arts films.