Among the traditional folk crafts in China, what are the old crafts that are about to be lost?

Diancui —— The Lost Traditional Craft of China

Diancui Tiancui is also called Kingfisher Feather Art (Kingfisher Blue Art). ) For two thousand years, China has been using the blue feathers of kingfishers as exquisite works of art and decorations, from hairpins, headdresses, fans to screens. While western art collectors focus on other areas of China art, including porcelain, lacquerware, sculpture, cloisonne, silk and painting, kingfisher art is unfamiliar to people outside China. Cui, that is, the feather of kingfisher. Diancui is the perfect combination of traditional metal craft and feather craft in China. First, the bases with different patterns are made of gold or gold-plated metal, and then the bright blue feathers on the kingfisher's back are carefully inlaid on the bases to make various jewelry objects. Unlike most animals with fluorescent and electrochemical colors (such as butterfly wings), the strong color of kingfisher feathers comes not from the feathers themselves, but from the rainbow color of light refraction, just like a prism that decomposes white light into the rainbow color of its spectrum. Feathers formed by these microstructures are called photonic crystals. The most expensive Diancui works use the kingfisher of Cambodia. Such a large export demand made feather export trade a means for the Khmer Empire to collect money, which was used to finance the construction of magnificent temples such as Angkor Wat. —— Excerpted from Huaxia Folk Culture Network