It's a day and a week

It's a day and a week

As a Chinese idiom, Pinyin is j ì ngy ī zh ō us ā n, which means that the ratio of the diameter of a circle to the circumference of a circle is 1:3. From Zhoubi Suanjing.

Idiom explanation

Diameter: the diameter of a circle; circumference: the circumference of a circle.

The origin of Idioms

"Zhou Bi Suan Jing" Volume I: "Pythagorean circle square map." Zhao Shuang, Han Dynasty, noted: "the diameter of a circle is one but three."

Analysis of Idioms

It's quite different

Idiom usage

There is a big gap between them. Even if you find a little light, ~, you can see the endless darkness around you more clearly. Lu Xun's preface to two episodes of qijieting's Essays