天塌有我在地陷有我爱
[tiān tā yŏu wŏ zài dì xiàn yŏu wŏ ài]
It means that 'as long as I'm here for you or my love is with you, no matter how dire the situation is (even if the sky falls or the earth caves in), everything will be okay'. It implies an unshakeable commitment and support.