The use of capital figures began in the Ming Dynasty. Zhu Yuanzhang issued a decree because of a major corruption case "Guo Huan case" at that time, which clearly required that the number of bookkeeping must be changed from "one, two, three, four, five, six, seven, eight, nine, ten, hundred and thousand" to:

Complex Chinese characters such as "one, two, three, four, five, land, seven, eight, nine, pick up, hundred (strange), thousand (Qian)" are used to increase the difficulty of altering account books. Later, "Mo" and "Qian" were rewritten as "Bai, Qian" and have been used ever since.

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Reasons for introduction

No matter whether it is Arabic numerals (1, 2, 3) or Chinese lowercase numerals (1, 2, 3), because the strokes are simple, it is easy to be altered and falsified, so the numerals on general documents and commercial financial bills should be capitalized with Chinese numerals: one, two, three, four, five, six, seven, eight, nine.

For example, "3,564 Yuan" is written as "3,000 Wu Bai Sixty-four Yuan". These Chinese characters came into being very early, and they are used as capital figures, which belongs to borrowing. This complicated writing of numbers was fully used as early as the Tang Dynasty, and then it was gradually standardized into a set of "uppercase numbers".