all the tea in China

excessive idiomatic uncountable

(idiomatic, hyperbolic) Something very valuable or priceless.

Japanese Meaning

非常に貴重で、値段がつけられないほど価値のあるもの。 / 比類なき、決して代替のきかない価値を持つもの。

She wouldn't sell her late grandmother's locket for all the tea in China.

彼女は亡き祖母のロケットを、世界中の富を積まれても売ることはない。

Sense（1）

(idiomatic, hyperbolic) Something very valuable or priceless.

I wouldn't trade you away for all the tea in China.