The gong is a musical instrument made of copper as the main material, with tin, silver and other metals added in proportion. It is widely used in opera, dance, folk activities, etc. The gongs in Tanxia Township, Leiyang City are traditionally handmade, following more than ten processes including material selection, ingredient mixing, melting water, blank making, forging, trimming, forming, quenching, cold working, polishing, and hammering. The operation process is very rigorous, requiring the temperature and technique to be very precise, and each step is linked together and completed in one go. The material selection requires the copper accuracy to reach 99.9%, and tin, silver and other metals are added in proportion (ingredients), heated to 1200 to melt (molten water), poured into a mold to make a copper billet (billet making), put the copper billet into a 900 furnace, burn it red, clamp it out and beat it into a piece (forging), wait for the gong piece to be heated and softened, cut it into a circle (trimming), continue to burn it red, put it in the groove and repeatedly hammer it into shape (molding), then heat it to a certain temperature, clamp it out and quench it in water (quenching), fish it out and hammer it, initially tune it (cold work), and then use an alloy knife to polish the surface (polishing). Finally, according to different types of gongs, different parts of the gong are repeatedly struck with different techniques to adjust its thickness and shape to achieve the sound quality required for the use of the instrument (one hammer determines the sound). The gong making skills of Tanxia Township rely entirely on the technical experience and music theory knowledge accumulated by the craftsmen, and are passed down from generation to generation through family and master-apprentice oral transmission.