Northeast Sniper King Battle at Tiger Tooth Mountain

The film tells the story of snipers, represented by Ren Tianxing (played by Zhang Junhan), and their fierce gun battles against the brutal Japanese invaders after the "September 18 Incident," following the collapse of the Northeast Provinces. Ren Tianxing leads a volunteer army in an ambush against the Japanese army, but all his comrades are killed in a night battle. Severely injured and near death, he is rescued by bandits and becomes disheartened, living as a bandit until Bai Ge (played by Kan Xin), who infiltrates the bandit camp in disguise, awakens him to the call of national duty. To save their country and themselves, Ren Tianxing and a small ant-Japanese team he forms with Bai Ge seek to assassinate a Japanese virus expert. However, their plan is discovered by the Japanese just as they are about to act. How will they escape the heavy pursuit? Why does Ren Tianxing personally erect a tombstone for himself? In the course of their secret investigation, a huge conspiracy by the Japanese to experiment on villagers as living subjects gradually comes to light. At this time, Ren Tianxing receives a 'challenge letter' from a Japanese sniper, and as the smoke rises on Tiger Tooth Mountain, the top snipers from China and Japan prepare for a fatal showdown. What will be the fate of everyone involved?