Stone mills and grinders are common in rural areas, why do Chinese tools rotate counterclockwise?

In rural China, there are many stone mills and grinders, which are the wisdom of the ancient people of China. One has to admire them for working out these things to facilitate people's lives.

But if you look closely, it is not difficult to realize that stone mills and grinders rotate counterclockwise. Many things I do are clockwise, but these two things are counterclockwise, so why?

When we were pushing the stone mill, such a heavy boulder. It takes a lot of strength to push it around. Some people who have donkeys at home tie a rope to the donkey on the edge of the stone mill and hold a whip behind it so that the donkey can walk around the stone mill.

This does not require a lot of effort if you don't push it by hand, but many families don't have donkeys at all. You have to rely on the human hands to push the ink. Imagine pushing a stone mill, with both of your hands on the pole of the mill, and your body leaning forward slightly, which is more conducive to force.

Left hand on the inside of the stone mill, right hand on the outside. We often use the right hand, so the right hand is also more powerful, if you put the right hand on the outside more power. It is also much easier to push the stone mill in this way, the center of gravity of the stone mill is all on the stone mill, if the right hand in the inside, the closer to the inside of the heavier and less easy to force.

Additionally, the construction of the stone mill is also determined by the stone mill, the stone mill inside the groove. There is a hole in the center, and when you place the item to be polished in the hole and push it counterclockwise, the item slides down the hole and is eventually crushed.

Anyone who has ever pushed tofu knows that all the bean juice stays in the grooves. Then, using a small brush, you put all the bean juice from the grooves into a container.