There are two kinds of Chinese characters in China: lowercase numbers include "one, two, three, four, five, six, seven, eight, nine, ten, hundred, thousand and ten thousand" and uppercase numbers are "one, two, three, four, five, seven, eight, nine, ten, ten, ten, ten, ten.

The characters of these two groups of numbers have already appeared in the ancient Chinese characters of China, but it is later that the system is applied to numbers.

Why do some people say that it was initiated by Zhu Yuanzhang in the Ming Dynasty?

It is because in the early Ming Dynasty, all localities reported financial statements and food data to the Ministry of Housing and Urban-Rural Development every year.

Guo Heng, Assistant Minister of Finance, colluded with six officials and local officials, involving 12 senior officials. The major "Guo Huan corruption case" involving six assistant ministers was to use blank account books to make false accounts and tamper with figures to embezzle money and grain, with a total amount of more than 24 million stone meters, almost equivalent to the total amount of grain requisitioned by the state at that time.

Zhu Yuanzhang was furious at this. After the corruption case was exposed, Zhu Yuanzhang executed all the officials involved. In order to prevent this from happening, Zhu Yuanzhang ordered that "one, two, three" and other easily changeable numbers should not be used in the future, and capital numbers must be used. Zhu Yuanzhang perfected the writing standard of uppercase mathematics. Change "paint" to "neat" and so on. And it has been used ever since.