Gambling mecca near Hong Kong (5)
I believe the answer is:
macau
'gambling mecca near hong kong' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for macau that I've seen before include "Part of China" , "region of China" , "somewhere in China" , "Small peninsula in China, a Portuguese territory until 1999" , "SW of 24 [SHANGHAI]" .)