1. Local farmers' market or agricultural products market: You can go to the local traditional market or special agricultural products market to find out if there are any shops selling Leymus chinensis.
2. Agricultural companies or agricultural products wholesale markets: You can also go to some companies or markets that provide agricultural materials or agricultural products to see if there are any businesses that provide sales of Leymus chinensis.
3. Online purchase: At present, many suppliers of agricultural materials and agricultural products have online sales channels. You can search for the keyword "Leymus chinensis" through search engines or major e-commerce platforms to see if there is a product supplier suitable for you. It is suggested that before buying, consult several vendors and compare the price and quality, so as to choose the best cost-effective supplier of Leymus chinensis.