没人理解的伪装没人怀疑的坚强
[méi rén lĭ jiĕ de wĕi zhuāng méi rén huái yí de jiān qiáng]
This translates to 'A mask no one understands, strength no one doubts'. It describes someone whose struggles and vulnerabilities are hidden under a facade of strength, which everyone around accepts without question. It represents hidden pain masked as resilience.