Bought gastrodia elata is empty in my heart, * * normal * *. Generally, gastrodia elata is rarely hollow, because it has undergone plastic surgery during processing. Gastrodia elata is divided into winter hemp and spring hemp. Authentic Gastrodia elata is solid and thick, with Ying Ge mouth, bright section and no cavity. However, the quality of spring hemp is poor, the bubbles are light, there are residual stems, and the section is dark and hollow.