What kind of heart idiom are you visiting?

Pinyin: mà n bù j and ng x and n

Explanation: man: whatever; Mind: care. Whatever. Don't take it personally.

Source: Ren Ming's three houses "Answering the old man Wang Yuanshu to set up a pond head": "The second pond in the northwest, year after year, the responsibility of the pond head is empty. If you are not careful, it will gradually become a disaster, and the more you can prevent it."

Ex.: At that time ~, but I didn't remember it until afterwards. ★ Wen Yiduo's great fact, immortal significance

Synonym: treat sth lightly, indifferent.

Antonym: concentration, concentration

Grammar: as attribute and adverbial; Used for work and study.

English: Careless