What are the six elements of modern tourism? What is its status and relationship?

The six elements of modern tourism include "travel", "travel", "food", "accommodation", "shopping" and "entertainment" ~

Among the six elements of modern tourism, "tour" is the core of tourism activities, and other activities are carried out around it; "Tour" is the basic condition and start of tourism activities. Although "eating", "living", "shopping" and "entertainment" can all increase tourism income, but because "shopping" and "entertainment" are higher-level consumption, the profits from consumer products are very high and attractive, so "shopping" and "entertainment" are important ways to increase tourism income ~