purple yam is the most profitable in northeast China. According to relevant information, Purple Yam, also known as Purple Ginseng and Purple Huaishan, contains a variety of vitamins, protein, amino acids and trace elements, and has high dietotherapy value. The price of Purple Yam varies according to its different regions. Generally, the wholesale price of Purple Yam is about a catty in 3 yuan, while the market price is about 5-8 yuan, and the retail price in supermarkets is about 12-18 yuan, while in supermarkets in some first-tier cities. Moreover, purple yam has low environmental requirements and strong adaptability, which can meet the planting needs in many areas. In addition, most suppliers in the market are looking for growers of purple yam, and the sales problem is not big, which has great prospects and considerable planting benefits.