Sour pears are good. Boiled water with sour pear and rock sugar has the functions of nourishing the liver, nourishing the kidneys and replenishing essence, clearing the liver and improving eyesight. Wolfberry has the functions of nourishing yin and nourishing the kidneys, replenishing essence and improving eyesight, and regulating blood pressure. Rock sugar snow pear can improve the symptoms of qi deficiency. If you have lung heat cough, bronchitis and bronchial asthma, drinking it in moderation can effectively regulate it. It removes toxins from the body and is also good for sore throat and throat inflammation. It also has good effects on patients with symptoms such as liver and kidney deficiency or indigestion, and can be consumed in moderation.