Xi Bai Po 2: Yingxiong Wang Er Xiao

During the Second Sino-Japanese War, the Japanese army attacks Nangunlong, a village in Hebei Province. The attackers get lost and ask 13-year-old cowboy Wang Er Xiao for directions. To avenge the death of his parents and protect other villagers, Wang Er Xiao pretends to surrender, then leads the Japanese to the ambush of Chinese army.

(Source: IMDB)