你可知顾里是顾源的命
[nĭ kĕ zhī gù lĭ shì gù yuán de mìng]
This username contains cultural elements associated with the series Tiny Times written by Guo Jingming. In this series 'Gu Li' is the name of the female lead and she's crucially important to the male character named 'Gu Yuan'. Therefore the phrase refers the importance of Gu Li to Gu Yuan just as important as his own life.