What are "yellow pages" and "blue pages"?

China City Blue Page is a new media of modern business, which can communicate effectively with enterprises and consumers for a long time and is rapidly growing into a new choice for enterprise advertising. Our aim is to serve the public more conveniently and comprehensively, and at the same time provide people from all walks of life with the concept and resources of "digital city". Its contents include complete telephone numbers, latest train times, detailed public information such as national civil aviation flights, local public transportation, long-distance passenger transportation, clearly classified business information, clearly guided consumption information and so on. With its excellent service value and commercial value, it has become a new choice of advertising media for more and more businesses and enterprises. As a new media, it contains all kinds of information, and through scientific classification, it makes the layout vivid, the page exquisite, easy to query, convenient for consumers to fully understand the business situation, and more conducive to promoting consumers' shopping behavior.

It is inferred that Blue Page is the business of an Internet company.