How much is Mao Zhenxing's calligraphy a foot?

Is it Mao Zhenxing, a military calligrapher and a member of China Book Association? If it is. It depends on the quality of the product. The calligraphy and painting of Tian Yingzhang and Shen Peng, a master of modern calligraphy, is about one foot 10w. The deceased's qigong works are 20w a foot. If the quality is good, it is estimated to be 5000-20000 feet. It depends on the quality of publicity and calligraphy itself.