In China, a girl conceals love (4)

I believe the answer is:

amoy

I'm a little stuck... Click here to teach me more about this clue!

'in china a' is the definition.
I can't tell whether this definition defines the answer.

'girl conceals love' is the wordplay.
I cannot really see how this works, but
'love' could be 'o' (In tennis, 'love' means 'zero') and 'o' is found in the answer.
'girl' could be 'amy' and 'amy' is located in the remaining letters.
No letters remain.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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