In 1932, the Battle of Songhu broke out. Zhang Haiyang, Zhao Lingyun, and Wang Dali, three sworn brothers of the 19th Route Army Pistol Brigade, led the remaining brothers of the pistol battalion to fight the enemy in bloody battles but were severely wounded. The brothers reunited with their old troops and reorganized the Iron-Blooded Pistol Team. They used their courage and skill to punish traitors, rob arms, and fight against Japanese spies, setting off an anti-Japanese storm in Shanghai. After misunderstandings and sacrifices, the three brothers always adhered to their original aspiration of protecting their homeland and the country, and guarded the defense line of Shanghai with their flesh and blood.
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