Does anyone know how the height of ancient people was calculated? Look at Romance of the Three Kingdoms. Everyone is two feet tall and eight feet tall. How tall are they with modern algorithms?

According to various ancient books, experts calculated the length of one foot in the past dynasties: one foot in the Warring States period was 22.5 cm; 23.1cm in Han dynasty; Three kingdoms 24cm；; Gold 24 .5 cm; Southern and Northern Dynasties 24.2-29.6 cm; Sui 29.6cm；; Tang 30 cm; Song 31.2cm; 32 cm in Ming and Qing dynasties.

According to this standard, we can calculate that Confucius is 2. 1 m tall. Although Yan Ying is more than 5 feet, she is actually only 1.2 meters, and she is a veritable dwarf. Xiang Yu1.88m; Guan Gong 2.16m; Lu is about 2 meters, and Wu Dalang is "less than 5 feet", only 1.3 meters. There is nothing wrong with calling him a dwarf.