According to the eight feet in the romance of the Three Kingdoms, the current height is 1.84 meters. Because the length of one foot in each dynasty is different, we can't accurately say how high eight feet are.
Ruler was the main unit for measuring length in ancient times, but with the progress of society, and because the conversion of ruler as a length unit was more troublesome, it was later unified to convert the length unit into decimal.
The length of one foot in each dynasty is different. It is said that the scale of one foot in each dynasty is determined by the length of the emperor's elbow at that time, so the length of one foot in each dynasty is different.
The Shang Dynasty began to measure the length with a ruler. One foot in the Shang Dynasty is equivalent to the current 17cm. According to this height, most men are about one foot tall, so the word 'husband' began to appear.