Indo-Chinese exclamation? (3)

I believe the answer is:

och

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'exclamation?' is the definition.
(I have seen 'Scots exclamation ' mean 'och' so perhaps 'exclamation' could also mean 'och')

'indo-chinese' is the wordplay.
'OCH' is hidden within the letters.
But, I'm uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for och that I've seen before include "What Hamish might say" , "Scotsman may cry" , "Scots expression of impatience" , "Scottish exclamation" , "Scots exclamation" .)

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