National intangible cultural heritage. In 2008, the ancient golden silk mosaic of Yue King was listed in the national intangible cultural heritage list. The ancient gold of the King of Yue shows the handcrafted gold-making technology in ancient China, and shows the elegant taste and noble temperament of royal jewels. Filament inlay, also known as fine gold craft, is a traditional handicraft skill in China, which has been passed down for a long time. Mainly used for making royal ornaments. For the combination of filigree and inlay, filigree is made of gold, silver and copper, and traditional techniques such as kneading, filling, saving, welding, weaving and stacking are adopted, and inlay is based on frustration, drawing and stacking.