To know the value of calligraphy works, you must first understand the status of the calligrapher, the calligraphy style he is best at, the average price per square foot of his calligraphy works, and then you ask who the author of the work is. The value of the work can only be known by considering the works of the period, calligraphy style, quality, size, etc. For example, works by calligraphers that have not yet reached maturity and works that are suitable for the occasion may not necessarily reach the value expected by collectors.