wouldn't do (something) for all the tea in China
Would not do something for any reason or incentive whatsoever. China has historically been one of the world's largest tea producers. But I absolutely love this jacket—I wouldn't sell it for all the tea in China! God, after my horrible experience this summer, I wouldn't go back to that country again for all the tea in China.
wouldn’t do something for all the tea in ˈChina
(informal) never; not for any reason at all: ‘If you marry him you’ll be a rich woman.’ ‘I wouldn’t marry him for all the tea in China.’