傾尽天下傾他心征戰天下占她心
[qīng jĭn tiān xià qīng tā xīn zhēng zhàn tiān xià zhàn tā xīn]
The phrase means 'To conquer the world to win his heart, and fight the world to occupy her heart'. It describes an all-consuming love where someone is willing to go through extreme lengths and challenges to be with or to be recognized by another.