Hold hands tightly and type three numbers.

From one to five

Numbers from one to five are relatively simple. Open your hand and stretch out different numbers of fingers to represent numbers from one to five.

From six to ten.

Six: open your thumb and little finger, and hold the rest of your fingers in your palm.

Seven: the thumb and forefinger are extended, which is the number "7"

Eight: The thumb, forefinger and middle finger extend at right angles to form the English letter "L"

Nine: Hook the index finger and hold the other fingers in the palm.

Ten: five fingers clench fist. In many areas in the north, the index finger is straight, and the index finger with the middle finger crossed is ten.

So two hands are two 10, which is 20.