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