Seabuckthorn is a specialty product in Northwest China, also known as vinegar willow and sour thorn willow. Sea-buckthorn juice made from wild sea-buckthorn fruit is a special drink exclusive to Pingyao. Seabuckthorn juice is rich in vitamin C, has a sweet and sour taste, and can also beautify the skin. It is very popular and can be bought in the streets and alleys of Pingyao.