Hello, the direction of scraping is generally from top to bottom. At the same time, we should follow the principle of yang first and then yin. As far as the palm is concerned, shave the back of your hand first and then the palm. It's best to scrape your fingers carefully to your fingertips. We can shave until the skin is red, and we can't just ask for shaving. Generally, it will be scraped for about 20 times, and it is necessary to change another part to continue scraping. Don't touch cold water immediately after scraping to avoid the invasion of cold evil. I hope it helps you.