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Open the course of "Gem Processing Technology", It is found that it is based on "Gem Processing Technology" written by Professor Liu Ziqiang of Jewelry Department of Jinling Institute of Science and Technology. Including six aspects of knowledge-a preliminary understanding of some gemstone raw materials, Understand the names, characteristics and development history of different gemstone cut styles, understand some basic equipment and accessories for gemstone processing, understand the processing principles and technological methods of gemstones, see the processing process of standard round polyhedral styles, and learn the processing quality evaluation of gemstones (including jadeite)."Hearing the captain's words, Xiang Lishan immediately picked up a fish knife and was ready to stab Song Guochun. Liu Guiduo didn't give in and said, 'Don't stab, you two tie up and throw it down.'4. Concluding remarks他跑龙套已经跑了好几年了，他真的不想跑龙套了。主要讲述的是一位无时无刻满脑子都是“喜欢给任何事物评分”的平凡却十分有魅力的广告公司职员“梵高，（权俞利 饰）”寻找真爱的趣味故事，是一部现实感十足的浪漫爱情剧。讲述因为28年后现身的亲生父亲，人生开始转变的女人，和她一直隐藏真实面貌的父亲之间的故事。