Tourism represents a kind of popular and pleasant activity that combines sightseeing, recreation and outdoor exercise, and it has been developing all along with the progress of the times. Since the middle of the 20th century, modern tourism has been growing at a fast pace around the world. The number of tourists has ever been on the rise, the scale of the tourism industry has been on constant expansion, and the position of tourism in the economy has been obviously raised. Tourism serves gradually as an important bridge of cultural exchange, friendship and further exchanges and exerts more and more extensive influence on the human life and social progress among various countries.
From ancient times till now, tourism has demonstrated the happy wish of the people for more knowledge, varied experience and good health.
In ancient times, ancient Chinese thinkers raised the idea of "appreciating the landscape through sightseeing". Ancient People also proposed to "travel ten thousand li and read ten thousand books'', which shows they found pleasure in enriching themselves mentally andphysically through traveling over famous mountains and rivers.