According to caishuiye. 20 1636 "Notes on sales service, intangible assets or real estate", advertising service refers to the use of books, newspapers, magazines, radio, television, movies, slides, road signs, posters, windows, neon lights, light boxes, the Internet, etc. to promote goods, business services, cultural and sports programs or announcements, statements and other entrusted matters for customers. Including advertising agencies and advertising, broadcasting, publicity, display, etc.