a good medicine tastes bitter
Bitter medicine, Chinese idiom, Pinyin is k ǔ K ǒ Uli á ngy à o, which means sincere advice and sharp criticism. It sounds uncomfortable, but it is good for correcting shortcomings and mistakes. It comes from six books of Confucius' family language.
The source of the idiom "the good medicine is bitter in the mouth but beneficial to the disease, and the loyal advice is adverse to the ear but beneficial to the action."
Chinese PinYin : kǔ kǒu liáng yào
a good medicine tastes bitter
there is not a single miss in a hundred tries. bǎi bù shī yī
the dragon 's liver and the phoenix 's marrow. lín gān fèng suǐ