Sweet potato (scientific name: Ipomoea batatas? (L.) Lam.), otherwise known as Ganchu, Sweet Potato, Zhu Shu, Jin Shu, Fan Ru, Red Yam, Jade Pillow Potato, Sweet Potato, Sweet Potato, Sweet Potato, Sweet Potato, Sweet Potato, Goose, and Sweet Potato.

Panicum miliaceum has round, oval or spindle-shaped tuberous roots in the underground part, the stems are recumbent or ascending, occasionally twining and multi-branched, and the shape and color of leaves often vary with different varieties. Usually, they are broadly oval, with different petioles. Cymes are axillary, and the capsules are oval or oblate, with 4 seeds 1-4, usually 2, and hairless.

Sweet potatoes are native to South America and the big and small Antilles, and are widely cultivated in tropical and subtropical regions all over the world, and are widely cultivated in most parts of China. Sweet potato is a high-yield and adaptable food crop, which is closely related to industrial and agricultural production and people's life. Apart from being the main grain, lump root is also an important raw material for food processing, starch and alcohol manufacturing industries, and roots, stems and leaves are also excellent feeds.

Sweet potato was first planted in Mexico and Colombia in central America, and was brought to the Philippines and other countries by the Spanish. Sweet potato was first introduced to China during the Wanli period in the late Ming Dynasty, and entered China-Yunnan, Guangdong and Fujian in three routes.

It is generally believed that sweet potato was introduced to China in the Ming Dynasty, and the first person to introduce sweet potato to China was Chen Yi. According to historical records, Chen Yi was from Beizha, Humen, Dongguan, Guangdong Province. In the eighth year of Wanli in the Ming Dynasty (1580), he was dressed in cloth, wrapped his shoulders, and set off from Humen by a friend's merchant ship for Annan (now Vietnam).