Take out a hand first and make a fist naturally. The position of the fingertip of the middle finger is Laogong point.

Second, when you pick up the scraping board, the corner of the board is pressed on Laogong point, so that you can press the whole body's strength on the board and massage the points.

Third, the thumb is close to the scraper, close to the back of the plate 1/3.

Four, the other three fingers are opposite the scraper, and the fingertips are close to the scraper.

Five, in the process of scraping, fingers don't force, only play a stable role.