别低头皇冠会掉别低头贱人会笑
[bié dī tóu huáng guān huì diào bié dī tóu jiàn rén huì xiào]
Literally it means 'Don't lower your head, or the crown will fall off; don’t lower your head, or the scoundrels will laugh'. It conveys the idea of maintaining self-respect and not bowing down in front of ridicule. There's an emphasis on holding one's head high.