The potions boiled by machines in Chinese medicine shops are the ones packed in vacuum bags. If the boiling is carried out in strict accordance with the operating procedures, the temperature and sanitary conditions can be achieved. Generally, it can be stored at room temperature (25 degrees) for about a week, shorter in summer and longer in winter, and it can be stored in the refrigerator for about a month. Note that these packaged hot potions should not be piled together, which will accelerate their rancidity.