There is a Hong Kong movie called "Two Boxes of Wisdom and Courage", which tells the story of two policemen. This is very interesting. Finally, Jackie Chan showed his way and asked for help.

Xia Zhengyi (Chen Long), the leader of the gang, smuggled drugs and made a fortune overnight. Although the police are well aware of their crimes,

The evidence is insufficient, so that it can't be brought to justice at the moment. Xia has a ledger that records all his illegal activities, which is kept by his mistress. The members of the anti-gang group who were ordered to investigate were Beethoven (Cen Jianxun) and A Qiu (Richard Ng). When they were handling the case, they caused a series of jokes and were reprimanded by their superiors. Anna (Ye Dexian), a senior policewoman, has a soft spot for Ah Qiu. With her help, they found an informant, Uncle Wen Taibao, who visited Xia in the evening.