Tai Chan-Ching

A cop who loses his partner in a shoot-out with gun smugglers goes on a mission to catch them. In order to get closer to the leaders of the ring he joins forces with an undercover cop who's working as a gangster hitman. They use all means of excessive force to find them.

The Occupant is about a young woman (Sally Yeh) who is trying to write a book/thesis on chinese superstitions. So she arrives in HK and rents a really cheap apartment. In the meantime, she befriends Raymond Wong's shady salesman desperate for a little R&R and Chow Yun Fatt's cop. Well, her apartment is haunted by the spirit of a deceased singer, hence the cheap rent.