Chen Guojun uses the local raw purple sand material in Yixing to make the purple sand pot by hand. His works not only embody the beauty of the purple sand material, but also add artistic charm through decorative techniques such as pottery carving and appliqué. For example, the pottery carving technique of engrave calligraphy and painting patterns with a steel knife or bamboo knife on the pot blank perfectly combines poetry, gold and stone, calligraphy and painting, seal carving art and purple sand production skills; The applique technique makes the work more naturally expressive.