你若不死便是晴天
[nĭ ruò bù sĭ biàn shì qíng tiān]
'If You Are Alive, It's Sunny Everyday.' On the literal level it might refer to surviving through hard times makes everything good again, while metaphorically speaking, if the specific 'you' (probably a loved one) survives/thrives/live well then everyday would be sunny because they mean that much joy.