Kohlrabi is cultivated all over China for vegetable and feed. The thick juice of leaves is used to treat gastric and duodenal ulcers, and it is one of the important vegetables in China. Except for Chinese kale, which originated in China, all varieties of cabbage originated from the Mediterranean Sea to the North Sea coast. As early as 4,000-4,500 years ago, it was cultivated in ancient Rome and ancient Greece. The northeast of China is commonly known as "kohlrabi" and Yunnan is commonly known as "lotus white".