You lose nothing on an Asian currency (4)
I believe the answer is:
yuan
'asian currency' is the definition.
'yuan' can be an answer for 'currency' (currency of China). I'm unsure of the 'asian' bit.
'you lose nothing on an' is the wordplay.
'lose' suggests deleting specific letters.
'nothing on' becomes 'o' (I've seen this in other clues).
'you' with 'o' removed is 'yu'.
'yu'+'an'='YUAN'
Can you help me to learn more?
(Other definitions for yuan that I've seen before include "Chinese money" , "Chinese currency unit" , "foreign currency" , "Monetary unit of China" , "Chinese capital" .)