失你比失去全世界还痛苦得你比拥有全世界还幸福
[shī nĭ bĭ shī qù quán shì jiè hái tòng kŭ dé nĭ bĭ yōng yŏu quán shì jiè hái xìng fú]
The meaning here is 'Losing you is more painful than losing everything in the world; getting you would be more fortunate than possessing all the wealth'. It's about the intensity of emotion felt when someone means that much in one's life.