Crossword Genius

Tricky question of China losing grip (6)

Ross

I believe the answer is:

teaser

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'tricky question' is the definition.
(a teaser is a puzzle or question)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for teaser that I've seen before include "Easter (anag) - puzzle" , "Conundrum" , "one using a backcomb" , "Hard question" , "One who annoys people or cards wool" .)

I've seen this clue in The Times.
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