我姓周却不能顾你周全
[wŏ xìng zhōu què bù néng gù nĭ zhōu quán]
The username 'I Am Surname Zhou But Cannot Fully Protect You' conveys a sense of guilt or frustration about failing someone despite bearing the responsibility (symbolically suggested by the homophonic use of Zhou 周 meaning also circle or cycle which can denote completeness).