雨过天晴是你的伪装对我微笑是你的坚强
[yŭ guò tiān qíng shì nĭ de wĕi zhuāng duì wŏ wēi xiào shì nĭ de jiān qiáng]
This translates to 'Clear skies after rain are your disguise; smiling at me represents your strength'. It poetically describes someone using a smile as a shield of strength against troubles, like the sky clearing up after a storm.