City Under Siege (2010)

The Qiyi Square Circus was touring in Malaysia, and the troupe members accidentally heard about the treasures left by the Japanese during World War II. Under the leadership of Zhang Dachu (played by Zou Zhaolong), a flying knife master, a group of five of them killed treasure hunters. Sonny (played by Aaron Kwok), a little man who wanted to become a flying knife expert, followed them and saw with his own eyes...