Tā yíxiàng kèjǐ-fùlǐ, cóngbù zài biéren miànqián shītài.
He has always kept himself under strict control and never loses his composure in front of others.
Tips
history
From 《论语·颜渊》: when his disciple 颜渊 asked what humaneness (仁) is, Confucius answered that it is to restrain the self and return to the rites.
culture
In Confucius's day 礼 meant the rites and social order of the Zhou dynasty, which he hoped to restore. Today the phrase is used more loosely for strict self-discipline and good conduct.
