Being in southeast Asia, Hong Kong gets a lot of fruits from surrounding areas. Many of such are not easily found in North America. The best season would be summer time when there is a better variety.

What the locals call "lung gnan" ("dragon eyes", bottom left in the picture) is one I like. Sweet but not too sweet, it is refreshing in the summer time.

Leechee, which you can find canned in North America, can be so sweet that it juices choke your throat.