The meaning of "tour operator" and "tourism auxiliary service provider"

First of all, I want to explain its background. The rise of world tourism began after World War II, and China tourism began after the reform and opening up in 1980s. These two concepts come from the study of world tourism in western countries. Then, explain its differences. China is a model of "travel agency or hotel or scenic spot-tourists". Some transportation, accommodation and meals are not tourism, but public utilities. The west, especially the United States, is a model of "tourist attractions, hotels, travel agencies-tourism intermediaries (tourism auxiliary service providers)-tourists". Tourism intermediary includes tourism transportation enterprises, tourism service enterprises, tour guide service intermediary enterprises and scenic spot management enterprises. Tourism operators, in our textbooks, are the direct managers and beneficiaries of tourism enterprises, such as hotels and tourist attractions; Tourism auxiliary service providers refer to tourism intermediary enterprises, personnel or organizations that indirectly help and benefit the tourism industry and link tourists with tourism enterprises, such as travel agencies, travel agents (mainly services such as purchasing tickets and booking rooms) and scenic transportation enterprises. It should be noted that in China, travel agencies belong to both tour operators and tourism auxiliary service providers, and undertake some services of tourism auxiliary service providers, such as purchasing tickets, contacting tourist transportation and booking hotels. I hope my answer will satisfy you!