1. Artistic value: Liu Defa's calligraphy works have unique artistic style and expressive force. His works follow the law and pursue ancient rhyme, which shows his love for traditional calligraphy and profound foundation. In the calligraphy field, his works are widely recognized and have certain artistic value and collection value.
2. Scarcity: Because the number of calligrapher Liu Defa's works is limited and his works are not common in the market, his works are scarce. Things are scarce, so the price of his works is relatively high.