keep to the center
The synonym yunzhizhong generally refers to yunzhijuzhong, a Chinese idiom. The Pinyin is y ǔ nzh í Ju é zh ō ng, which means that words and deeds are impartial and conform to the principle of Zhongzheng. "Yunzhijuezhong" is a plaque hanging in the middle of the Palace Museum, written by Emperor Qianlong of the Qing Dynasty. From the book of history dayumo.
Idiom usage
Used as a predicate or attributive. The three sages of Yao, Shun, and Yu were the law of all ages. Yi Qi by Fang Xiaoru in Ming Dynasty
The origin of Idioms
In the book of history, dayumo said, "the mind of the people is only in danger, the mind of the Tao is only tiny, only the essence is the only one, and it is allowed to speak in the middle."
to a turn
clear breeze and bright principles - qīng fēng gāo jié
pay even for a horse 's drink of water -- extreme honesty - yìn mǎ tóu qián
lay one 's head on one 's pillow and just drop off to sleep - gāo zhěn ān wò