How much is a flat foot of calligraphy and painting at present?

Mr. Kang Zhuang, a painter from Shandong, is unique in his own way. He created a world with infinite meaning with an unprecedented combination of Chinese and western painting techniques. He reconstructed landscape painting from a forward-looking perspective, successfully enlivened the new classics in the history of painting water, and gave infinite enlightenment to modern people on the inheritance and development of landscape painting. At present, the area of genuine products in the auction market is about 30,000-50,000 square feet.