How many Xuan paper stamps have been issued by a * *?

Six sets. China's first set of rice paper stamps "Ancient Calligraphy in China-Running Script" was issued in Jiajiang on May 10, with a set of 6 stamps. The content is selected from the preface to Lanting written by Wang Xizhi in the Eastern Jin Dynasty, the manuscript of offering sacrifices to my nephew written by Yan Zhenqing in the Tang Dynasty and the Huangzhou Cold Food Post written by Su Shi in the Northern Song Dynasty.