The price of China's paintings and calligraphy is in "square feet" (referred to as "flat feet"). Mr. Jia Pingwa's calligraphy works, the latest market transaction price this year 1200 yuan/square foot:
On June 22nd, 2008, the lot of "Henan Xinghan" was 0567, and the mirror center of Jia Pingwa's "Calligraphy" (four feet publicity, 8 square meters) sold for 9900 yuan.