First of all, you should have a correct sitting posture, sit up straight, keep your head straight and look forward, put your hands at your sides at will, put your legs flat and stand up. Tell the children not to lie prone on the table or cross their legs. Because a good sitting posture is conducive to bone growth and good health.

2. As long as the height of the outer side of the index finger is kept as the standard, the relationship between the index finger is above and the thumb is below is formed (that is, the fingertip of the thumb cannot be extended too far, so that the fingertip of the thumb is at the same height as the nail surface of the index finger or reaches the position above the height of the outer side of the index finger 1/3), that's all!

3. "-Set out in pairs of three, with solid fingers and flexible wrists.

The angle is appropriate, the direction is positive, and the strokes are light and heavy. "