小丑不哭是怕毁了妆容
[xiăo chŏu bù kū shì pà huĭ le zhuāng róng]
'Xiao Chou Bu Ku Shi Pa Hui Le Zha Rong' translates to 'The Clown Doesn’t Cry for Fear of Ruining Makeup'. It conveys the idea of hiding one's sadness behind a facade, perhaps not wanting to appear weak or different in front of others.