Iron stick yam is a variety of yam, and Chinese yam is a yam of origin! The Chinese yam is mainly produced in Shandong, and Huai yam is produced in Henan Wenxian, in quality, Huai yam is better than Huai yam! The two are very close to each other, so there are many businessmen will be Shandong's Chinese yam transported to Wenxian when the Chinese yam to buy! But the general household, the two are almost the same! Really Wenxian iron stick yam expensive 7-80 a catty! And Huai yam more than ten dollars a pound, more economical!