(If you can wash your hands once before meals, after going to the toilet or when you go home, you can reduce the risk of hand, foot and mouth disease, new coronary pneumonia and other diseases; to prevent polio and bird flu and other diseases, remember not to eat raw food or drink raw water; Overeating, beware of diabetes and alcoholic liver; don’t stay up late, get enough sleep, improve your immunity, and the flu will revolve around you... Humorous cartoons explain the mechanism of diseases for you, open this book, learn about the genesis of common diseases, and be your own doctor .)