你若安好便是晴天你若快乐便是幸福
[nĭ ruò ān hăo biàn shì qíng tiān nĭ ruò kuài lè biàn shì xìng fú]
If you are safe, it’s a fine day; if you are happy, that's all the happiness I need. It expresses pure wishes for another’s wellbeing without needing anything else in return.