the cooked food a major feature of Chinese dietary customs. This is related to the earlier Chinese  civilization and the development of cooking techniques.

Countries like Japan and South Korea have the habit of eating raw food, such as Japanese sashimi

Chinese medicine believes that to maintain the spleen and stomach，the diet must be warm for food.

The main two purposes，one is to kill bacteria and parasite，ensure food safety;The second is to mix flavor，rich taste，create food.

especially，the stomach is not good and weak people. eating raw food can burden the stomach.