If it is 2 digits, then the digit of 10 is the upper divination, and the single digit is the lower divination, for example, 2 1, then it is the upper divination and the lower divination. Then add ten digits and single digits. If it is less than six, then this number is a variable. If it is greater than 6, the remainder divided by 6 is used as the dynamic number. For example, just 2 1, 2+ 1=3, then it is three strokes, and it becomes a double divination.