Word-of-mouth marketing: refers to the use of effective methods to allow consumers to introduce the company's products, services or the overall image between friends and family, recommended marketing methods. The following are word of mouth marketing. ['Xiao Zhang is a beauty expert. His family is full of all kinds of cosmetics. He also often takes pictures in his WeChat circle of friends and recommends his favorite cosmetics to relatives and friends.', 'In order to make a small town a tourist town, the Municipal Tourism Administration asked the cultural communication company to carefully plan a creative advertisement, which attracted widespread public attention, and the unknown town became famous.', 'After Auntie Li bought a physiotherapy device, she publishes her own use process in the circle of friends with pictures and pictures every day. After winning thousands of likes, she changed back to a health pillow at the physiotherapy company.', 'A shopping mall released holiday promotion information on TV half a month ago, and also hired many retired grandparents to distribute small promotional advertisements in various districts. On the day of the festival, employees and their families lined up a 100-meter queue at the mall entrance.']