“Duoyunxuan” on Nanjing Road in Shanghai is a famous place for buying and selling Chinese calligraphy and painting. It often has calligraphy and painting exhibitions, and also sells four treasures of the study. There are many works of famous people. Calligraphy critics like Xie Zhiliu are always invited to identify calligraphy and painting. In addition to ancient calligraphy and painting, there are also works by young and middle-aged painters. This video is silent.