The value of a work of art or an artist is usually influenced by many factors, including the popularity of the artist, the quality of the work and the market demand. Wang Gangliang's calligraphy may have a certain popularity and local market demand in Baiyangdian Scenic Area, but to accurately evaluate its value, more factors need to be considered, such as the reputation of the artist, the innovation of his works and the market demand.
If you are interested in Wang Gangliang's calligraphy, I suggest you consult local galleries, art dealers or art critics to get more accurate comments and suggestions. At the same time, by understanding the history and market performance of works of art, more reference information can be obtained.