别让我的真心喂了狗
[bié ràng wŏ de zhēn xīn wèi le gŏu]
This means 'Don't let my sincerity be in vain.' In Chinese culture, dogs are sometimes metaphorically used to represent someone who does not appreciate a good deed, as if the genuine feelings are thrown away and wasted like feeding something valuable to dogs. It expresses disappointment or sadness when sincere feelings are unreturned or undervalued.