美丑不过就一张小B脸
[mĕi chŏu bù guò jiù yī zhāng xiăo b liăn]
It translates to something like 'beauty and ugliness are just a B face', which carries colloquial and slightly derogatory implications regarding judging appearances on social media or forums, where B might imply 'bitchy' or exaggeratedly artificial features.