Gold foil is an important variety of gold crafts.
The ancient method of gold foil is to first purify the gold, and then beat it with thousands of hammers to form a gold leaf with an area of 2.5 square centimeters, and then sandwich it in black gold paper smoked with kerosene, and then hammer it by hand for 6-8 hours to make gold. The leaves are made into foil with an area equivalent to about forty times the size of gold leaves, and then cut into squares to serve. The color is pure, the thickness is uniform, and the color does not change over time. It is a symbol of gorgeousness.