There are generally five ways to write the capitalization of two, namely, two, two, four, four, four and four.

1, er: "er" is a standard writing, which is widely used in finance and accounting.

2. Two: "two" is the usage in RMB.

3. "Er" is a variant of "Er", which evolved from the word "Er". The word "Er" was moved up to form the word "Er".

4. Mi: "Mi" is an ancient word for "two" and an uncommon word with a long history.

5. Mi: "Mi" and "Er" are variants with the same meaning, and the historical origin of the characters is relatively long.

Use of capital figures

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 should be changed from "one, two, three, four, five, six, seven, eight, nine, ten, ten and one hundred thousand" to "one, two, three, four, five, seven and nine".

Later, "Mo" and "Qian" were rewritten as "Bai and Qian", which have been used ever since.