Ejiao is still the first tonic for people who are weak and need tonic. Ejiao is sweet and flat, and taking proper amount of Ejiao in summer will generally not get angry. Ejiao's soul is "nourishing", nourishing blood, promoting fluid production and benefiting qi, so it has become a tribute and top grade, which can last for thousands of years. When the characteristics of Ejiao are recorded in ancient books, they are all "Ejiao is flat", and Ejiao has a wide range of health care functions, such as nourishing the heart. Ejiao enters the liver meridian, and the liver governs hair growth, produces blood and nourishes the heart. As the saying goes, spring nourishes the liver and summer nourishes the heart. Eating Ejiao in summer is necessary for the health care and nourishment of the heart. With a small amount of honeysuckle, chrysanthemum or herbal tea, it can achieve the effect of tonic without getting angry in summer.