How to write capital figures: zero, one, two, three, four, five, six, seven, eight, nine and ten. You don't have to write zero eight months ago, but you have to write zero five days ago.

Ming dynasty improvement

In the Ming Dynasty, Zhu Yuanzhang issued a decree because of a major corruption case "Guo Huan case" at that time, clearly requiring that the number of bookkeeping must be changed from "one, two, three, four, five, six, seven, eight, nine, ten, ten, one hundred thousand" to "one, two, three, four, five, eight, seven, seven, seven. Later, "Mo" and "Qian" were rewritten as "Bai" and "Qian", which are still in use today.