Longquan has two business cards, one is a sword and one is celadon. On the morning of the third day, we visited the famous Shen Guanglong Jianpu. At present, the fourth generation of the sword shop, Shen Xinpei, is the only intangible cultural heritage of Longquan Baojian, a master of crafts and art. Master Shen has made sword castings for many domestic and foreign leaders and celebrities. We visited the process of sword casting in the sword shop. The two sword casting masters shot Mars when they built the sword, so scared that we fled away without leaving a good photo. Mars burned three holes in a sweater, but the two sword-casters still wore short sleeves next to no one's iron-casting sword, completely unaffected, and not afraid of Mars splashing on the skin, it was really a brave artist.