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

Filament inlay, also known as fine gold craft, is a traditional handicraft skill with a long history in China, which is mainly used to make royal ornaments. It is a combination of filigree and mosaic. The filament is made of gold, silver and copper, and it adopts traditional techniques such as kneading, filling, saving, welding, weaving and stacking. The inlay adopts the processes of punching, chipping, punching, boring, punching, collapsing, extruding and embedding. The metal sheet is made into a bracket and claw groove, and then pearls and precious stones are inlaid.