Held up in Chungking? (4)

I believe the answer is:

hung

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'held up' is the definition.
The answer and definition can be both related to change as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

'in chungking?' is the wordplay.
'in' says the answer is hidden in the clue.
'HUNG' is hidden in the letters of 'chungking'.

Can you help me to learn more?

(Other definitions for hung that I've seen before include "Suspended" , "Dangled" , "(Of a painting) exhibited (in a gallery)" , "(Of a jury) unable to agree on a verdict" , "(Of parliament) with no overall majority" .)

I've seen this clue in the Evening Standard.

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