What is the diversified development and comprehensive management of tourism resources?

If you study tourism, there is this knowledge point in the introduction to tourism, and it will be available during the exam. I don't remember exactly. It's been too many years since graduation. Generally speaking, the development of tourist attractions is not just a single sightseeing, but diversification refers to variety diversification. The same is true of comprehensive management, such as hotels, hostels and scenic shopping, which are all driven.