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Jyutping koeng5 nau2 dik1 gwaa1 bat1 tim4
Pinyin qiáng niǔ de guā bù tián

Definitions (Wiktionary)
  1. proverb
    something done grudgingly will not produce satisfactory results

強扭的瓜不甜 [强-----]

Jyutping
Pinyin qiǎng niǔ de guā bù tián

Definitions (CC-CEDICT)
  1. lit. if you have to use force to break a melon off the vine, it won't taste sweet (because it's only when the melon is ripe that it can be removed with just a slight twist) (idiom)
  2. fig. if sth is not meant to be, it's no use trying to force it to happen