What occupation does network marketing belong to?

Gold: metal, hardware, machinery, steel, gold and silver, automobiles, sports equipment, finance, excavation, mining, communications, civil servants, lawyers, judges, managers, athletes and eloquence.

Wood: forestry, timber, planting, wood products, furniture, paper packaging, Chinese herbal medicines, flower shops, vegetarianism, fruits, vegetables, paper products, stationery, publishing, clothing, clothing, cloth, religion, culture, education, art, music, performing arts, calligraphy and painting, civil servants and accountants.

Water: catering, beverages, aquatic products, aquarium culture, shipping, shipping, transportation, shipping, seafarers, frozen food, trade, tourism, marketing, logistics, mobile industry and skills.

Fire: fuel, petroleum, power generation, electrical appliances, electronic products, inflammable and explosive products, optics, glasses, photographic equipment, photography, smelters, cosmetics, fine products, ornaments, lamps, toys, advertisements, chefs, barbecues, mechanical repairs, psychologists and speakers.

Earth: construction engineering, earthwork, building materials, real estate, stone, bricks and tiles, cement, ceramics, jade, precious stones, mining, native products, meat, leather, consultants and consulting companies.