not completely understand
Half understand, Chinese idioms, Pinyin is B à nd à NGB à D à ng, meaning is not all understand, half understand half do not understand. From Kong Yiji.
The origin of Idioms
When he talks to people, he is always full of too much to understand. ——The third lesson plan of junior high school Kong Yiji
Idiom usage
It refers to a person's poor skill.
not completely understand
Only clothes, not people - zhǐ zhòng yī shān bù zhòng rén
similarly afflicted people pity each other - tóng bìng xiāng lián
try by various tricks to find favour with - chuǎi hé féng yíng
Against heaven and against the people - nì tiān wéi zhòng