有一种爱情叫相濡以沫有一种时间叫一生一世
[yŏu yī zhŏng ài qíng jiào xiāng rú yĭ mò yŏu yī zhŏng shí jiān jiào yī shēng yī shì]
Translated as 'A kind of love called living together through difficulties; a measure of time called an entire lifetime.' It refers to the ideal of long-term commitment and deep emotional bonding between lovers that lasts forever.