How high is eight feet?

Take the bronze ruler of the Western Han Dynasty unearthed today as an example. The size of rulers varies in different dynasties. It was eight feet tall in ancient times and about 184.8 cm in modern times. 1 ft in ancient times is about 23. 1 cm in modern times. In addition, some scholars believe that Ling Shu Jing is the earliest record of the height of China people. The height of the ancients was mentioned in Chapter 14 of Lingshu Jing: "Man is seven feet and five inches long", and based on this height, the bone length of each part of the ancients' body was given. However, in the twelfth chapter of the Water Mirror Lingshu Jing, a common height data of the ancients is mentioned: "a man of eight feet", which is also the earliest reason for the saying of "eight feet tall" commonly used in later novels.

Dimensions of past dynasties and metric conversion today

Shang Tang ruler: about 32 cm (according to Le Shu's records, the ruler built in the Ming Dynasty is 32 cm equal to Shang Tang's ruler);

Yu Xia ruler: about 25.6 cm (Shang Tang ruler is 2 inches for Yu Xia ruler);

Ruler of the Zhou Dynasty: about 20.48 cm (Yu Xia ruler takes 2 inches as the weekly ruler);

Ruler of Han Dynasty: about 23.09 cm;

Ruler of Sui Dynasty: about 29.4 cm;

Small rulers of Sui Dynasty: around 24. 6cm；

Large scale in Tang dynasty: about 29.4 cm;

Small ruler in Tang Dynasty: about 24.6 cm.