From spring to winter, four seasons are suitable. This book takes seasons as longitude and food as latitude, and accurately draws a scientific map of the diet of the four seasons. It is a practical diet manual that can accompany you all year round. The key points of diet and health preservation in each season, and the foods that should be avoided in each season. With simple and easy-to-understand popular language and concise structure, this book intimately expounds the main points and taboos of diet in spring, summer, autumn and winter for you. From climate to food, from people to individuals, from healthy people to sick people, everything is nuanced. There are always food topics you care about, and there are always foods you should avoid. This book is a close friend of your diet throughout the year and a friendly staff member at the family table.