“CHENG HUA NIAN ZHI”FOUR-CHARACTER SEAL MARK AND OF THE PERIOD(1465-1487) Of baluster form, rising from a narrow spreading foot to sweep into broad rounded shoulders before tapering into a waisted cylindrical neck, the shoulders painted with two ferocious coiled dragons, each chasing a 'flaming pearl'，the other side depicts a crane.The two handles are carved into the shape of plum blossom.