Gansu has a long history and spectacular scenery. The various ethnic groups and diverse cultural heritage found in Gansu indicate the origins of the Chinese nation. The Mogaoku Cave Temple in Dunhuang, one of the three examples of cave temple art found in China, is one of the oldest, richest and best-preserved cultural and art treasures in the world It is referred to as a ' wonder of the world.' Nowadays, this lavish historical and cultural heritage improve people's prosperity, providing a pivot for tourism economic growth.