A legacy
As a Chinese idiom, Pinyin is y í f ē ngy ú s ú, which means the customs left over from the previous generation. It's from public security policy.
Analysis of Idioms
[synonym]: old customs and habits
The origin of Idioms
Han Jia Yi's public security policy: "those who used to be Qin are now Han, but their customs have not changed."
Idiom usage
As subject, object, attribute; used in writing.
A legacy
Clever words and clumsy reasoning - cí qiǎo lǐ zhuō
be toughened and hardened into steel - bǎi liàn chéng gāng