Keep a cold eye on
In Chinese, Pinyin is l ě ngy ǎ NJ ì NGK à n, which means to observe calmly and carefully from the side. It comes from Xu Yin of Tang Dynasty.
Idiom usage
Used as a predicate or object; used in dealing with affairs
The origin of Idioms
Xu Yin of Tang Dynasty wrote in Shanglu San Shi Yi Yan Jian Zhu: "when you are in danger, you will be tired of the medicine of gods. You are confused and suspicious. It's ridiculous to speak frankly and coldly, but it's unjust to think and say."
Idiom explanation
To observe calmly and carefully from the side.
Keep a cold eye on
It's easy to make a general in the face of the enemy - lín dí yì jiàng
small in number and weak in strength - liàng xiǎo lì wēi
undertake to do a difficult job as best one can - miǎn wéi qí nán