Industries related to metal tools or materials, hard work, decisive work and leading others' work are all gold.
Such as: martial artists, representatives of public opinion, hardware industry, excavation industry, mining industry, automobile industry, transportation industry, financial industry, banking industry, stock industry, futures industry, electrical industry, computer hardware, computer parts, scientific community, jewelry industry, logging industry, tool machinery industry, sword manufacturing industry, metal equipment, steel, securities, gold and silver vessels, repair and transportation.