疼了疼了就懂了装着装着就累了
[téng le téng le jiù dŏng le zhuāng zhe zhuāng zhe jiù lĕi le]
Means 'Pain teaches, pretending tires'. This implies that pain helps one understand life better but pretending or keeping up appearances eventually wears out the individual, emphasizing both personal growth through suffering and exhaustion from maintaining facades.