Watch Ma Yongzhen: Duel in Zhabei Full Movie Free Online 123Movies. This film tells the story of Ma Yongzhen, who was born in a family of martial arts in the early years of the Republic of China. In order to help the people of Shanghai's Zhabei district, Teacher Ma ventured into danger alone, relying on his martial arts and a fiery patriotic heart to fight the Five Lakes Gang and the French martial artists.