Some suggest that it was also used by business people during bargaining (i.e., to convey a bid by feeling the hand gesture in a sleeve) when they wish for more privacy in a public place.
While the five digits on one hand can easily express the numbers one through five, six through ten have special signs that can be used in commerce or day-to-day communication.
Two of the systems are listed below: Use of the signs corresponds to the use of numbers in the Chinese language.
These signs also commonly refer to days of the week, starting from Monday, as well as months of the year, whose names in Chinese are enumerations.
Some believe that for formal scenario such as giving speech or presentation, counting with the palm facing the audience and starting with all fingers extended is more polite, since the gesture of folding of fingers representing bowing.