Each herbal tea has different health care functions, so if there is no professional explanation, don't mix and match it at will to avoid side effects. Lotus seeds are cool, and medlar is warm, which has nourishing and anti-aging effects. The efficacy of Lycium barbarum is comprehensively discussed in the Classic of Materia Medica: "Lycium barbarum, which can moisten and nourish, can also clear away heat, specially tonify kidney yang, moisten lung and promote fluid production, and benefit qi and promote fluid production, is an important medicine for deficiency of true yin and nourishing liver and kidney from fatigue. Nine times out of ten, the elderly have yin deficiency, so eating is mostly for the benefit of the eyes. " Making tea with Lycium barbarum is not only effective for dizziness, soreness of waist and knees and nocturnal emission caused by yin deficiency of liver and kidney, but also effective for hyperlipidemia, hypertension, arteriosclerosis and diabetes. Lotus plumule: Origin-Guangxi. Clearing heart, calming liver, reducing lung fire, relieving summer heat and vexation, promoting fluid production and quenching thirst, and treating red eyes.