by surprise
By surprise, the Chinese idiom, Pinyin is j ī Q í B ù y ì, meaning to attack when the enemy did not expect it. It's from Sun Tzu's virtual reality.
The origin of Idioms
"Sun Tzu · Xu Shi" says: "those who travel thousands of miles without toil will travel in no man's land." Three Kingdoms · Wei · Cao notes: "out of the air to attack empty, to avoid its guard, hit it unexpectedly."
Idiom usage
Used as predicate, object, attribute, etc. At that time, Shizong ascended to the throne, saying that he was lucky that Zhou had a great funeral, and the emperor was newly established, so he would not be able to send troops. New history of the Five Dynasties: Eastern Han family: Liu Min
Chinese PinYin : jī qí bù yì
by surprise
pavilions , terraces and open halls. lóu gé tíng tái
Look at the outside and know the inside. wàng biǎo zhī lǐ
sadden one 's friends and gladden one's enemies. qīn tòng chóu kuài