In 2007, there were 900,000 square feet of calligraphy in the Beijing market.
In 2008, there were 4.8 square feet of calligraphy in Beijing market, with 3 million.
In 2009, Haikou auctioned 5.6 million calligraphy "The People of China", which was 4 feet and 8 square meters.
20 10 China, a 4.8-square three-character calligraphy, auctioned in Hongkong130,000.