Positive fruits and vegetables are onions, sweet potatoes, taro, carrots, chestnuts.

1, onion

Onion is native to western Asia, China and abroad are widely cultivated. Is one of China's main vegetables. China's onion origin mainly in Fujian, Shandong, Gansu, Inner Mongolia, Xinjiang and other places.

2, sweet potato

Sweet potato is rich in protein, fat, polysaccharide, phosphorus, calcium, potassium, carotene, vitamin A, vitamin C, vitamin E, vitamin B1, vitamin B2 and 8 kinds of amino acids.

3, taro

Taro is mainly distributed in the Pearl River, Yangtze River and Huaihe River Basin. Taro is an important vegetable and food crops, nutritional and medicinal value, is suitable for young and old nutrients; and taro starch particles as small as potato starch 1/10, its digestibility up to 98% or more, especially for infants and patients to eat.

4, carrots

Carrots conical or cylindrical, fleshy purple or yellow, long petiole, three pinnately compound leaves, compound umbels, small yellowish or white flowers. Native to the area of Central Asia, has a history of more than four thousand years.

5, chestnuts

Chestnuts are known as the "king of dried fruits" reputation, has an important health value. Its fruit taste delicious, unique flavor, fine powder, with the stomach and spleen, tonic kidney and strong tendons, the efficacy of blood to stop bleeding.

Baidu Encyclopedia - Chestnuts

Baidu Encyclopedia - Carrot

Baidu Encyclopedia - Taro

Baidu Encyclopedia - Sweet Potato

Baidu Encyclopedia - Onion

People's Daily Online - Foods should also be divided into yin and yang