Perfect Exchange, also known as The Sting II, is a 1993 Hong Kong action comedy film written and directed by Wong Jing and starring Andy Lau and Tony Leung.

Mandy Chin plays poker with prison inspector Chung Cho-hung, rich tycoon Lau Yiu-cho and Singaporean gambler Chan Wah-lek in Lau's casino and cheats with the help of his girlfriend, Lily, and partner in crime, Gold Finger Chi as the card dealers, and wins over HK$6 million.

Chung looks forward to torturing Mandy in prison, but the latter bribes inmates Kei, Big Eye Kwong and Crazy Bill for protection.

Robinson overhears this but he believes Mandy is a good person and asks him to take down and promises to give him the treasury bonds if succeeds.

[clarification needed] Knowing the bonds are hidden in Lau's villa, Mandy offers Chung HK$30 million to help him by wooing Mona.

However, Mandy finds Chi's dead body while Lau catches Chung and has him arrested and imprisoned for home intrusion and indecent exposure.

He gives Chung the HK$30 million check he promised earlier, which will only be cashable in 1997, the bonds are deposited in a Swiss bank to generate interest, while Mandy will travel around the world with Lily for four years.