伪装的悲唯己可知
[wĕi zhuāng de bēi wéi jĭ kĕ zhī]
Translates to 'Hidden sorrows only I know'. Indicates a hidden layer of sadness or sorrow that one keeps concealed from others. The depth of personal pain remains private; it's a facade masking inner turmoil, touching on loneliness and secrecy in human emotions.