Forge a clean corner
As a Chinese idiom, the Pinyin is d ǐ L ì Li á NY ú, which means to make moral integrity through tempering. It's from the book of rites, Confucianism.
The origin of Idioms
"The book of rites · Confucianism" said: "the recent article, sharpens the honest corner."
Idiom usage
In Song Sushi's "Liu Youfang can still be a Xuanshi or a Jiazhou governor in charge of the class system", it is said that "there is a gentry's style in forging a clean corner." Chapter 46 of Li Baojia's the appearance of officialdom in the Qing Dynasty: my minister is honest and upright. He is not allowed to do any errands wherever he goes.
Analysis of Idioms
Compared with the former, the latter focuses on the cultivation of moral integrity and virtue.
Forge a clean corner
appear united outwardly but divided at heart - mào hé shén lí
The army is strong and the general is brave - bīng qiáng àng yǒng