Seal printing on long necked bottles of imitation official glaze and melon edges in Yongzheng of Qing dynasty: a general description: " the Yongzheng system of Qing dynasty" six-character and three-line seal printingThe shape of the item is similar to that of the moon white concave prism bile bottle of the southern song dynasty imperial palace museum's imperial palace official kiln ( see song official kiln special exhibition, page 92, figure 53 ). the imperial palace museum's " hong Li ancient costume figure" also contains similar porcelain bottles, or is based on it. in the picture, emperor ganlong sat in front of the book case and gazed at the bottle on the case with his eyes. if he had thought about it, it could be seen that he had a keen interest in Zhao song feng ya and his deliberate pursuit.The partner has a straight neck, a bulging belly, five petals of melon in the abdomen, and concave corners of the petals. the shape of the partner is unique. White imitation official glaze is applied on the outer wall, which is thick and moist. the opening piece is long and sparse. the grayish brown carcass is hidden in the thin part of the glaze, and the sauce-colored tyre protector is brushed around the foot. except that the four concave edges are easily changed into five, the rest are all deliberately imitating the effect of repairing the glaze color and " purple mouth and iron foot" of the official kiln bottle hidden in the palace. Tang ying classified this glaze type into the category of " imitation song iron bone, grand view of moon and white" in the chronicle tablet of Tao cheng, which belongs to one of 57 kinds of glaze water in imperial kiln factory. The whole vase is smooth and smooth, showing natural elegance. few people with the same vase shape have passed down from generation to generation. in the past 40 years, only two Yongzheng imitation glazed vases have been seen. they are of the same shape and size and should belong to the same variety. It is extremely rare that the quality of the product is well preserved.Prismatic flasks were first found in the octagonal flasks of yue kiln in the Tang dynasty ( see " Chinese cultural relic essence dictionary, ceramic volume", page 228, figure 177 ). they were used in front of Buddha. their beauty in shape and elegance in glaze color have always been praised by later generations.See: Sotheby's, London, special exhibition for Mrs Clark's collection of important Chinese porcelain, March 25, 1975, No. 113Song Guan Yao special exhibition, Taipei palace museum, 1989, page 92, figure 53" imperial palace paintings in Qing dynasty, a major collection of cultural relics and treasures in the palace museum", Shanghai science and technology publishing house, commercial press ( hong kong ) co., ltd., 1999, pp. 200, fig. 45Dictionary of the essence of Chinese cultural relics, ceramic volume, Shanghai dictionary publishing house, commercial press ( hong kong ) co., ltd., 2002, p. 228, fig. 177