Spring fish refers to fish that breed and grow in spring, mainly produced in warm seas, such as the South China Sea and the East China Sea. Saury, on the other hand, refers to fish that breed and grow in autumn, mainly produced in cold seas, such as the Sea of Japan and the North Pacific Ocean. The difference of growing season and producing area between spring fish and saury leads to their different ecological environment and food sources, which affects their body shape, taste and taste. Spring fish is usually small and tender, suitable for frying, frying and other cooking methods; Saury, on the other hand, is large and fleshy, which is suitable for cooking methods such as roasting and steaming.