The precision casting method of bronze and other metal objects invented in the Spring and Autumn Period. The method is to make a model of a vessel with wax, fill it with mud inside and outside, dry it, heat it, make the wax liquid flow out, block the wax outlet, then inject the metal solution, cool it, and remove the mud, so as to get the metal vessel with the same touch as the wax. Objects cast by lost wax method can be exquisite and have the effect of hollowing out.

In modern precision casting, the principle called investment precision casting is the same.

A large number of historical facts show that the lost wax method has been continuously applied in China, and it is still widely spread in Beijing, Shanxi, Inner Mongolia, Jiangsu, Guangdong, Yunnan, Qinghai, Tibet and other provinces and regions in modern times. Foshan, Suzhou and other places are still using the above traditional techniques to make artistic castings.