Crossword Genius

Links from China with a promotion (5)

Ross

I believe the answer is:

chain

'links' is the definition.
(a chain is made up of links)

'china with a promotion' is the wordplay.
'china' anagrams to 'CHAIN'.
However, I am not clear how this is indicated.

'from' is the link.

(Other definitions for chain that I've seen before include "Group of atoms" , "Series of links; sixty six feet" , "Part of cycle" , "Line of links" , "Twenty-two yards" .)

I've seen this clue in The Guardian.
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