No surprise
As a Chinese idiom, Pinyin is bi ā NCH é Nb ù J ī ng, which means that the border is stable and there is no war. It comes from Zizhi Tongjian, the 15th year of Emperor Taizong's Zhenguan reign.
The origin of Idioms
"Zizhitongjian, the 15th year of Zhenguan of Emperor Taizong of Tang Dynasty:" it says: "the emperor Yang of Sui Dynasty worked for the common people and built the Great Wall to prepare for Turks. I only set Li Shiji in Jinyang, but it's the Great Wall. Isn't it magnificent?
Idiom usage
From then on, the person who lived in the western border was several years old. Cai sat here and was dismissed.
Analysis of Idioms
Peaceful coexistence
No surprise
go in to and come out from the state of being and not being - chū yǒu rù wú