A term used to describe an Asian whore that cheats (hence the Chee sound) on her boyfriend. A Chi can be very frugal/cheap(the other Chee sound) and very flirtatious.
Bernard:Man, no way? I didn't expect her to be a Chi.
In Chinese tradition, good flowing of Chi makes you healthly. When you sick, some path flows of Chi may be obstructed which can be cured (so Chi can again flow normally) using acupuncture. However, too much flow of Chi is not good like Hurricane that can root up houses.