Gold is more valuable than Zijin, which is an alloy of gold, copper, iron, nickel and other elements. The gold content of Zijin is 58.5%, which is not as high as gold, so the price of Zijin is not as high as gold.

Gold is the earliest metal discovered and used by human beings. Because it is rare, special and precious, it has been regarded as the first hardware since ancient times and has the title of "King of Metals". Gold is implied by modern people as a noble representative.