Five core crafts of national treasure

1, gold. It is a process that gold and mercury are synthesized into a gold mercury agent, coated on the surface of bronze ware, and then heated to evaporate mercury, so that gold will adhere to the surface of the ware without falling off, which is collectively called gold plating process.

2, filigree inlay. This technique is one of the traditional handicraft techniques in China, that is, the gold, silver and copper are spun into silk, and various ornaments such as jewelry and utensils are made by various techniques.

3, hammer. This is an ancient carving technique and one of the traditional metal processing techniques in ancient times. Its method is to make a model of the object to be molded, and then put a thin layer of copper on the model and beat it with a hammer. This method is called "hammering".

4. Gold and silver are wrong. It takes gold and silver as the carrier, fixes jade on its surface by claw-tooth inlay method or edging inlay method, or inlays gold and silver on its surface with jade as the main body.

5. flowers. It is a process of hammering a chisel with various basic patterns to make the metal surface show concave-convex patterns. These are the five core processes of national treasure.