The processing method of thale cress: pick the impurities, slightly soaked in water, fished out and cut into sections, dried in the sun. Stir-fried mustard: take the cut section of mustard in the pot, stir-fry, remove and cool (stir-fried mustard spike method with). Thorny mustard charcoal: take the cut section of the thorn mustard in the pot, stir-fry with the fire until black, less spraying water, take out and dry in the sun (Thorny mustard cob charcoal method with).