Finger count "refers to the decimal system.

There is no such thing as a decimal system for finger counting.

"Finger counting" is mostly used by fortune tellers. "Counting by pinching fingers" seems mysterious, but it is actually just a method to calculate heavenly stems and earthly branches.

The cooperation between ten heavenly stems and twelve earthly branches generally requires paper and pencil, but the ancients rarely had the opportunity to use paper and pencil when calculating numerology.

So just divide your fingers into three sections and fix them for ten days. When they coincide with the twelve earthly branches, you need to read the earthly branches according to your knuckles, so you can quickly calculate the heavenly stems and earthly branches of the year and month, and you can get it when you pinch your fingers.