Most pickled foods contain a lot of salt, which is not good for health, such as blood pressure and easy to get fat. Moreover, nitrite will be put into most pickled foods to keep them fresh. This substance belongs to industrial salt, which is toxic and harmful to the body if ingested in large quantities or for a long time.
Kimchi is a favorite vegetable in China. It is pickled with salt and other condiments for a certain period of time. They have a strong salty taste and can be preserved for a long time. The main raw materials are cucumber, pepper, soy sauce, various vegetables, salt and so on.
Kimchi can be regarded as a kind of China culture, and its origin cannot be verified, at least before the Bronze Age.