Is the calligraphy and painting of Ma Jingxiu in Bingxuanzhai true?

Ma Jingxiu's calligraphy and painting in Bingxuanzhai is true. According to relevant public information, Ma is a famous painter and calligrapher in China, and the inheritor of seal engravers' techniques in China. His calligraphy is refined by 20 13, and it is appraised by the Cultural Heritage Protection Department of the Ministry of Culture, with a price of 8,000 yuan per square meter.