Make money on China's stock exchange (4,2)
I believe the answer is:
cash in
'make money' is the definition.
(I've seen this before)
'china's stock exchange' is the wordplay.
'china's' can be anagrammed to 'CASH IN'.
But, I am not clear how the anagram is indicated.
'on' acts as a link.
Can you help me to learn more?
(Other definitions for cash in that I've seen before include "Get ready" , "Exchange for money; seize an advantage" , "what piggy bank has?" , "Take advantage of" , "Realise" .)