Which is the largest hotel chain in ancient China?

The Yuelai Inn in literary works is true, but it is true that hotels in ancient China should be post stations. The post station is not only owned by the state, but also a single meal, and ordinary people can't get in. The post station is a communication institution specially set up by the government to transmit official documents and military information after the emergence of the country. They have a history of 4000 years, and their construction and operation costs are important expenditures of the state finance. Postal service is responsible for all kinds of political, economic, cultural and military information transmission tasks. To a certain extent, it is also a part of logistics information and a specific network transmission and transportation. Theoretically, the post station can be regarded as a hotel dedicated to ancient civil servants in China!