After the Qin and Han Dynasties, it was the Wei and Jin Dynasties. After the Wei and Jin Dynasties, it was the Southern and Northern Dynasties. After the Southern and Northern Dynasties, it was the Sui and Tang Dynasties. The weights and measures inherited by the Sui and Tang Dynasties were actually the weights and measures of the Northern Qi and the Northern Zhou during the Southern and Northern Dynasties, that is, the weights and measures after the explosion.
Compared with the Qin, Han, Wei company banner design and Jin Dynasties, the scale, weight and capacity of the Sui and Tang Dynasties all increased dramatically. How much has it increased? During the Qin and Han Dynasties, a foot was about 23 centimeters, a catty was about 250 grams, and a liter was about 200 milliliters. During the Sui and Tang Dynasties, a foot was about 30 centimeters, a pound was about 600 grams, and a liter was about 600 milliliters. From the Qin and Han Dynasties to the Sui and Tang Dynasties, the scale increased by 30%, the weight increased by 140%, and the capacity increased by 200%! The collective inflation of weights and measures, like inflation in nature, is a means for the government to increase taxes and increase exploitation.
The question is, why is the scale expansion not very obvious, but the weight expansion is very large, and the capacity expansion is particularly strong? Because the scale is single-dimensional (straight line), it is very easy to see how long it is horizontally and how wide it is vertical. The government used a 20-centimeter ruler to measure the cloth last year, and this year, it used a 30-centimeter ruler to measure it, and the common people would immediately notice it. If the scale expansion is too obvious, the people will protest collectively.