姑娘我不傲娇
[gū niáng wŏ bù ào jiāo]
It means, 'girl (or to a girl), I'm not tsundere/haughty'. The term 'tsundere' comes from Japanese manga referring to characters who reject affection then gradually start to show it. So this could imply sincerity without pretense or shyness around someone, particularly directed towards girls by saying it outright they aren't being aloof.