Traditional porcelain engraving skills are included in the second batch of representative projects of Huai'an's municipal intangible cultural heritage. According to research, traditional porcelain engraving skills flourished during the Qianlong period. In the late Qianlong period, Qianlong realized that porcelain decoration was too formatted and denounced it as "vulgar" and "vulgar style". He ordered that the production and decoration of porcelain should be "new". In order to cater to the emperor's will, literati and scholars used diamond pens to paint and engrave on high-quality plain porcelain, forming a new traditional handicraft porcelain engraving. The first porcelain engraving work in China was created by a Taoist priest in Zhushan, Jingdezhen. The art of engraving on plain porcelain reproduced the art of "engraved white pottery" that had been extinct since the Shang Dynasty. It became more prosperous in the late Qing Dynasty and early Republic of China, and was introduced to Huai'an in the early years of the Republic of China. Basic content Porcelain engraving is to use a knife instead of a pen. On plain porcelain, a small hammer is used to knock out different depths of spots on the plain white porcelain according to the author's conception and painting ideas. The special artistic effect produced by the process of conception, design, engraving, coloring, and finishing. The materials for porcelain engraving are generally selected from porcelain with thick glaze, low hardness, and easy to engrave. The materials can be divided into ordinary porcelain, talc porcelain, colored porcelain, celadon and bone porcelain. The glaze colors can be divided into white glaze, black glaze, brown glaze, celadon and tea glaze. Porcelain engraving has a wide range of themes, and portraits of historical and cultural celebrities, scenic spots and historical sites, and production and life scenes can all be used as themes of expression. Huai'an's porcelain engraving technology has also innovatively added "porcelain engraving painting", "porcelain engraving inlaid with metal", "porcelain engraving shadow carving" and other processes, and is mainly expressed in practical utensils (such as teapots, pen holders, porcelain plates, bowls, jars, etc.). The main tools for porcelain carving include carving knives (usually special alloy steel blades with high hardness), hammers, wooden sand tables, brushes, diamond bars and grinding discs, etc. In addition, brushes, ink, rice paper, inkstones, alcohol, etc. are also required. Coloring pigments generally use oil paints, which are not easy to fade and can be collected for a long time. Traditional porcelain carving techniques incorporate traditional calligraphy and painting techniques. It is an excellent traditional craft with unique artistic value, ornamental value and collection value.