Twenty (niàn), number, meaning twenty. Twenty is twenty, thirty is thirty, and thirty is forty. This is an old proverb.

Shuo Wen Jie Zi Volume 30 20: 20 and also.

Words:

1, No.21History

The twenty-first history. Clear sky Ren Shang? "Peach Blossom Fans Catch the Society": "Look at the Thirteen Classics, the Twenty-first History, Nine Schools and Three Religions, a hundred schools of thought contend, bad essays and novels." Detailed "Twenty-one History".

2.24 bridge

In Yangzhou City, Jiangsu Province. "The 24th Bridge is a brick bridge in Wu Jia, a red medicine bridge behind the Chuntai in Zaixi," said Li Dou in Qing Dynasty. One said twenty-four bridges. Zhao Qingyi's poem "Chen Sima Zhao Chun Nong Zhai Jisheng" says: "Ang night is far away, accounting for 24 bridges of fireworks." See Twenty-four Bridges for details.

Extended data:

The lunar calendar commonly used in calendars means twenty.

The solar calendar is generally represented by Arabic numerals, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, the lunar calendar is usually represented by Chinese characters, and 2 1 day is generally written as "2 1".

The lunar calendar includes the first, second, third, eleventh, twelfth, thirteenth, twenty-first, twenty-second, twenty-third and so on.

The solar calendar has the number 3 1, and the lunar calendar has no number 3 1. The big month "30" is the end of the month, and the small month "29" is the end of the month.