八bā?, is the capital form of the number "eight". Mostly used for tickets, accounts, etc.
Eight, in ancient times, meant a toothless rake for gathering grain. Nowadays, it is usually used to capitalize eight when accounting, such as: eight thousand yuan. When used as a verb, it can be explained.
The vernacular version of "Shuowen Jiezi": 八, the dialect says: a toothless rake is called "八". The glyph uses "hand" as the side part and "bie" as the side part.
Extended information:
The use of uppercase numbers began in the Ming Dynasty. Zhu Yuanzhang issued a decree because of the "Guo Huan Case", a major corruption case at that time, which clearly required that the numbers for accounting must be composed of "one, two, three, four, five, six, seven, eight, nine, ten, one hundred, "Thousand" was changed to "one, two, three, four, five, Lu, seven, eight, nine, ten, one hundred (mo), one thousand (qian)" and other complex Chinese characters,
to increase Difficulty in altering account books. Later, "Mo" and "阡" were rewritten as "百、千" and are still used today.
At the beginning of the establishment of the Ming Dynasty, it was stipulated that every year all the chief ministers, prefectures, prefectures, and counties across the country must send accountants to the Ministry of Household Affairs to report local fiscal revenue and expenditure accounts and the amount of money and grain. Figures between all levels of government and with the Ministry of Household Affairs must be completely consistent.
Baidu Encyclopedia——Eight