Child prodigy? It's hardly surprising (6,6)

I believe the answer is:

little wonder

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

'it's hardly surprising' is the definition.
('little wonder' can mean something is unsurprising)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Another definition for little wonder that I've seen is " It's not surprising".)

I've seen this clue in The Telegraph.

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