After calcination, quench with vinegar. According to the general rules for processing in the 2020 edition of the Pharmacopoeia of the People's Republic of China, section 0213.

Take clean river sand and place it in a roasting container, heat it with strong fire until it reaches a slippery state, then add the items to be roasted. Keep stirring until the surface bulges, becomes crispy, or reaches the specified degree, then remove it, sift out the river sand, and let it cool. Unless otherwise specified, the amount of river sand should be enough to bury the items to be roasted. When quenching with vinegar, sift out the auxiliary materials and while still hot, immerse them in vinegar to make them crispy. This is according to the general rules of processing in the 2020 edition of the Pharmacopoeia of the People's Republic of China, section 0213.

Make the medicinal materials crisp and easy to break. According to the General Rules for Processing in the 2020 edition of the Pharmacopoeia of the People's Republic of China, section 0213.

Take the prepared medicinal materials for calcining, smash them into small pieces, and place them in a suitable container. Calcine until they are crispy or thoroughly red, then remove and let cool, and crush. For salt-type medicinal materials containing crystalline water, it is not required to calcine until red, but it is necessary to evaporate the crystalline water completely, or form all into a honeycomb-like solid. This is in accordance with the general rules for processing in Section 0213 of the 2020 edition of the Pharmacopoeia of the People's Republic of China.

The auxiliary ingredient is vinegar, which is used for steaming. This is in accordance with the general rules for processing in Section 0213 of the 2020 edition of the Pharmacopoeia of the People's Republic of China.

Select the medicinal materials to be processed according to their size, and follow the processing regulations for each type. Cook them thoroughly with vinegar until there is no white core when cut open, then remove and let them dry until they are 60% dry. Slice and dry them. This is in accordance with the General Rules for Processing in Section 0213 of the 2020 Edition of the Pharmacopoeia of the People's Republic of China.

Take the items to be processed, mix them evenly with vinegar, let them soak thoroughly, then place them in a frying container. Fry until they reach the specified degree, then remove and let cool. During the vinegar processing, use rice vinegar. Unless otherwise specified, use 20kg of rice vinegar for every 100kg of items to be processed. This is in accordance with the general rules for processing in Section 0213 of the 2020 edition of the Pharmacopoeia of the People's Republic of China.

Take the product to be calcined, place it in a calcination pot, seal it, heat it to the required degree, let it cool, and then remove it. This is in accordance with the general rules for processing in the 2020 edition of the Pharmacopoeia of the People's Republic of China, section 0213.

Roast until charred, then spray with vinegar. According to the General Rules for Processing in the 2020 edition of the Pharmacopoeia of the People's Republic of China, section 0213.

Stir-fry and then spray with vinegar. According to the General Rules for Processing in Section 0213 of the 2020 edition of the Pharmacopoeia of the People's Republic of China.