How to distinguish the five elements of the industry from the industry that belongs to wood: plants, growth, channels, softness, culture, kindness and service, all the undertakings about training belong to wood. The five elements belong to the fire industry: there are industries that burn with heat, and lighting, energy, entertainment, etiquette, performance, communication, sports, and all related beautification businesses belong to the fire. Five elements belong to the soil: there are land, nature, architecture, earth and stone, classical, stable, neutral and waterproof industries, and all management undertakings belong to the soil. The five elements belong to the gold industry: metal, currency, materials, machinery, hardness, jewelry, cutting, development, and all decision-making businesses belong to gold. The five elements belong to the water industry: they are fluid, continuous, clean, rushing, variable, liquid, freezing, sound, and all the undertakings related to transmission, all of which belong to water.