Sui Haicheng's calligraphy is worth more than one square foot.

The quotation of Sui Haicheng's calligraphy works: ordinary works (four characters regardless of font) per square 1000 yuan. Multi-character works (generally no more than 200 words): cursive script is 2,000 yuan per square, official script is 3,000 yuan per square, regular script (middle) is 4,000 yuan per square, seal script is 5,000 yuan per square, small script is 6,000 yuan per square, and fine works are 6,000-10000 yuan.