红颜无觅寻蓝颜已皆空
[hóng yán wú mì xún lán yán yĭ jiē kōng]
'Red Beauty Nowhere To Be Found Blue Men Have Already Faded'. In traditional terms in Chinese culture, 'red face' (红颜) refers to a beautiful woman while 'blue face' could be understood more loosely, it generally means someone special but lost forever in this phrase.