“…Gold is an important material from ancient times and has been found as a decorative material in tombs from the Shang Dynasty (1600BC–1046BC) [ 1 , 2 , 3 ]. Gold is widely used in various decorations, such as Chinese classical furniture [ 4 , 5 ], due to its brilliant color, dazzling luster, and excellent chemical properties. Gold leaf gilding, which is the art of decorating the whole or parts of wood, metal, plaster, glass, or other objects with gold in either leaf or powder form [ 6 , 7 , 8 , 9 ], is an important gold decoration process.…”