1. Artistic value: Cao Zijian is a recognized calligrapher, and his works show profound calligraphy skills and unique artistic style. The brushwork is vigorous and magnificent, which shows the strength and beauty of calligraphy art. After careful creation and tempering, the works have high artistic value and can bring people aesthetic enjoyment and artistic enlightenment.
2. Scarcity and collection value: Cao Zijian is a well-known calligrapher with a limited number of calligraphy works, and is often sought after by many collectors and art lovers. Scarcity makes his works have high collection value.