Practice and grind
As a Chinese idiom, Pinyin is C ā or ó um ó zh ì, which means repeated training. From the epitaph of Zou Qing of Song Dynasty.
The origin of Idioms
Song Yeshi's epitaph of Zou Qing of Song Dynasty says, "all the books and studies show that the Tao is the heart of people's desire. It's not common for people to go in and out, and it's good to practice and temper."
Idiom explanation
I've been honing my words.
Chinese PinYin : cāo róu mó zhì
Practice and grind
Beat the marrow and spread the ointment. qiāo suǐ sǎ gāo
there is no lack of people of that ilk. shí fán yǒu tú
there is not the slightest error. háo lí bù shuǎng
Gather up chapters and sentences. duō shí zhāng jù
every form of evil cannot be done. zhū è mò zuò