strategically located places
Baierguanhe, a Chinese idiom, Pinyin is B ǎ I è RGU ā NH é, which means that it refers to the dangerous and solid place of mountains and rivers, the same as "baierguanhe". From Qiyang.
The origin of Idioms
The second poem of Qiyang written by Yuan Haowen of Jin Dynasty: "the rivers and grasses are not horizontal in the hundred and two passes, and the army has concealed the capital of Qin Dynasty in ten years."
Idiom usage
It refers to the river and mountain.
strategically located places
great literature and classical works - gāo wén diǎn cè
be perfectly calm and collected in commanding the army - zhǐ huī ruò dìng