Traditional Chinese medicine believes that hot compress can also be called "ironing", which has four functions: warming and nourishing skin, promoting qi and blood circulation, removing blood stasis and relieving pain, and expelling wind and cold.

When you feel uncomfortable in your neck, legs, abdomen or waist, you can put the fried coarse salt in a bag and apply it to this uncomfortable part, which will accelerate blood circulation and promote metabolism because of warm stimulation, so as to dilate capillaries, enhance resistance, and achieve the effects of promoting blood circulation, removing blood stasis, tonifying kidney and benefiting qi.