Yes, it's called expelling sand, which can detoxify and lose weight, and there's something called silver sand strips, which is the reason. This strip is a simple strip. If you can hold back the pain, it will turn blue, which proves that the waste in the body has been slapped, leading to the so-called consumption, that is, the blood clot mentioned by western medicine is caused by excessive deposition and accumulation of blood lipids, cholesterol and triglycerides, so the excess in the body has been removed. The body will be slimmer after the toxin, and it can also promote blood circulation without shaving. Scraping is surface treatment, and the particles are small. Scraping is a kind of acupoint therapy. Blood clots in major blood vessels are relatively large in diameter, so scraping can remove blood vessels that cannot be scraped. Treating deeper parts is often beneficial to the body. Wu Peici.