1, Shang Dynasty, one foot is equal to today 16.95cm. According to this scale, people are about ten feet tall, so they are called "husbands";

2, Zhou Dynasty, one foot is 23.1cm;

3. In Qin Dynasty, one foot was about 23.1cm;

4. In Han Dynasty, one foot is about 21.35-23.75 cm;

5, Three Kingdoms, one foot is 24.2 cm today;

6, Southern Dynasties, one foot is about 25.8 cm;

7. Northern Wei Dynasty, one foot is 30.9 cm today;

8. In the Sui Dynasty, one foot was 29.6 cm;

9. In the Tang Dynasty, one foot was 30.7 cm;

10, song and yuan dynasties, one foot combined with today's 31.68cm;

1 1, in the Ming and Qing dynasties, carpentry was one foot and now 31.1cm;

12, modern 3 ft ≈ 1 m (m), 1 ft ≈33.3333 cm (cm).

Extended data:

Introduction to development

In the pre-Qin period, the length units were Zhang (ten feet), Xun (eight feet), Chang (two seeks), and in addition, Xian. Here is the length of a person's outstretched arms.

Later, the unit of length below the inch was produced: minute (one tenth of an inch), centimeter (one tenth of a minute), milli (one tenth of a centimeter), second (also called "silk" after the Song Dynasty, one tenth of a milli), sudden (one tenth of a second) and slight (one tenth of a second). Today, the use of "silk" and "milli" comes from this.

There are also "Hu" and "Wei" used together, which also means extremely subtle, such as "The Biography of Lingguan": "The misfortune of husband often accumulates in the small".

ruler

A weapon that often appears in fantasy novel in recent years (mentioned in Stars Change and Fighting against the Sky) is very popular among readers.

A ruler, usually three-edged, has no tip at the front of the sword and no blunt surface at the back of the sword compared with a sword. All three sides are sharp edges, which can be used by means of smashing, chopping, cutting, cutting and so on.

The ruler weapon mentioned in the novel:

Xuanzhong Ruler: The weapon used by the protagonist ZSZSZSZ in the novel "Fighting against the Sky" is made of flaming black iron. It is extremely hard and heavy, and has the effect of suppressing quarrelling. It is dark and has no blade or edge. It is given by Master Yao Lao.

Baidu Encyclopedia-One Foot