Boil Trichosanthes trichosanthes into water (approximately the weight of one Trichosanthes trichosanthes is 200 grams), take 1000 grams of water and cook for 20 to 60 minutes, take out about 200 grams of water (note: it must be cooked in a copper pot ), let cool for later use, put 500 grams of snow into a pot and use fire to boil, add the water used to boil the trichosanthes, cook for 1 hour and 30 minutes, and freeze by itself in a natural environment (that is, put it outside for one night). After the preparation is completed, it will be in the form of a gel. Just take a little and apply it on the areas you need to use! (I have personally tested this, and I guarantee there will be no problem!!)