Soaking fennel in yellow wine and drinking it at a certain dose has the effects of stimulating appetite, eliminating phlegm, expelling wind, resisting spasm, treating constipation and prolonging sleep time. It also helps to prevent and treat gastrointestinal infectious diseases and relieve fullness and abdominal cramps. But it should be noted that fennel is also hot. Chinese medicine suggests that people with yin fire should not eat too much, otherwise they are prone to sores. It is not advisable to eat more in summer, and pregnant women should also avoid eating.