叶公好龙 (Yè Gōng hào lóng)

lit. Lord Ye's passion for dragons (idiom); fig. to pretend to be fond

Character breakdown

Usage

他口口声声说喜欢中国文化,其实只是叶公好龙。

He keeps saying he likes Chinese culture, but he's actually just a fair-weather fan.

Tā kǒukǒushēngshēng shuō xǐhuān Zhōngguó wénhuà, qíshí zhǐshì Yè Gōng hào lóng.