What are the circles drawn by men and women with embroidery needles?

The result of the test is that if the needle swings horizontally, it is a female treasure, and if it swings vertically or turns in circles, it is a male treasure. A red thread is worn on the embroidery needle, and the lower end of the red thread is hung above the pulse of Ma Bao's right hand. The needle tip is close (about 0.5cm) but does not touch the skin. After putting it on, the needle has carefully observed the swinging direction. If the needle swings back and forth in the arm direction, it is a male treasure, and if it swings left and right or draws a circle, it is a female baby.