My hometown is Ningxia, and the five treasures of Ningxia are red, yellow, blue, white and black: Lycium barbarum, licorice, Lan Yan, Ermao and Nostoc flagelliforme. Because the fishing of Nostoc flagelliforme destroys the environment, it is basically forbidden to fish Nostoc flagelliforme now. Ningxia has made great efforts in developing tourist souvenirs, such as the famous celadon in China combined with desert sand, Wukui pottery, folk paper-cutting, sand painting, and other agricultural and sideline products with local characteristics, such as selenium sand melon, jujube, potato, celery, mutton, Gong Mi and Yellow River carp.