我不皱眉都知道我不珍贵
[wŏ bù zhòu méi dōu zhī dào wŏ bù zhēn guì]
'Wo Bu Zou Mei Dou Zhi Dao Wo Bu Zhengui' literally means 'I know I'm not precious even without frowning'. In English it conveys someone is so certain about their lack of value or self-esteem they feel unimportant as a default state, expressing a very negative self-awareness.