By using the thumb as a pointer, and marking off the distal phalanx, middle phalanx and proximal phalanx of each finger, we can count up to 12 on one hand, as shown below.

• 以大拇指为指针，并划分出每根手指的末端、中端和底端指骨，我们可以在一只手上一直数到12，如下图所示。