Why does the donkey mill rotate counterclockwise?

The ancients first decided the grinding direction according to the winding direction of vines. According to modern theory, it seems to follow the laws of nature, that is, the silk grain of roses, which is well known to people at present, is also consistent with the winding direction of vines, which may be related to people's right-handed working habits. For example, when we ride a bike, we think it's better to turn left than right.