Poor nasal function is the most common symptom of hepatitis B and the first symptom of all liver diseases. The liver is the largest digestive organ, and many parts of digestion require the liver’s participation, and with abnormal liver function, the patient’s digestive function declines. I met a college classmate at one of the meetings who was the director of the infection department of a county hospital in Taizhou, and he himself had hepatitis B. When I talked to him about liver disease, his understanding was deeper than mine, and I was very impressed. He said that the first symptom of liver disease is poor appetite, and once this symptom appears, he knows he has an attack. Moreover, poor appetite is positively correlated with liver function; the less you want to eat, the worse your liver function is. I recall a patient, 18-year-old boy, subacute liver failure of hepatitis B. When he came, he vomited and could not eat for 3 days, he was given hormone shock, then he got better, and when he recovered, he could eat a pound of shrimp at one meal, his mother joked that he could not afford to eat, and the money for the meal was far less than the medical expenses. Weakness is also a common symptom of hepatitis B. The heavier the weakness, the more serious the liver disease, and some patients even say, “Doctor, it’s hard for me to catch my breath. Or the boy mentioned above, when he was discharged from the hospital, his mother said: My child, when he came, did not even have the strength to go up one floor, it was me who carried him up. I then noticed that the boy was at least 65 kg, and his mother was very skinny, so I don’t know how she carried him up there! A few days ago, I saw this patient again in the clinic, already married with a child, a long time ago, I wonder if he can remember what his mother did for him.