10 across
Person
getting
break
on
QI?
(4-5)
Person getting break on QI? (4-5)
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hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at QI? — that's your definition, the Chinese concept of vital energy. Then for the wordplay, person getting a sentence gives you LIFE, and break in the sense of forcing a door open gives you FORCE. Put them together and there's your answer.