proverb
no good deed goes unpunished; those who help often end up being resented by those whom they help (syn.) 好心冇好報，好頭帶爛帽, 好心著雷打, 好心冇好報，好柴燒爛灶, 好心沒好報, 好心予雷舂, 好心無好報, 好心得雷打, 好心沒好意, 好心冇好報, 好心予雷唚, 好心著雷劈, 好心予雷拍死, 好心唔得好報, 好心不得好報
Examples (Wiktionary)
Mandarin
这件事你还是别插手吧！免得到最后里外不是人，好心没好报。
這件事你還是別插手吧！免得到最後裏外不是人，好心沒好報。
zhè jiàn shì nǐ hái shì bié chā shǒu ba ！ miǎn dé dào zuì hòu lǐ wài bù shì rén ， hǎo xīn méi hǎo bào ．
I wouldn't get involved in this if I were you! You'll try to please all of them, but in the end, you'll please none of them.