Thunderbolt Boxing Mandarin

In the early years of the Republic of China, Ping Bo, the owner of Jixian Martial Arts School, was killed by the Japanese master Gu Lan. Tie Wa gets along well with the big-tongued girl Red Butterfly (Shi Si) in the mountains. When Gu Lan's son Gu Gang (Nangong Xun) returned from studying in Japan, he was attracted by Feng Niu's beauty and provoked a misunderstanding between her husband Da Xiong (Tong Lin) and Tie Wa. Fortunately, Feng Niu intervened, and Tie Wa gained Da Xiong's understanding, retrieved the secret book, and said goodbye before returning to the mountain. Later, Daxiong and Gu Gang were defeated in a decisive battle and died in a plot; Feng Niu refused to be raped and humiliated by Gu Gang and committed suicide to protect her innocence. Tie Wa and Red Butterfly learned of this and went down the mountain to avenge Feng Niu. They relied on the power of "Thunderbolt Fist" to kill Gu Gang.