File photo taken on Aug. 7, 2012 shows tourists visiting Lake Namtso in southwest China's Tibet Autonomous Region. Statistics showed Tibet received 10.584 million tourists in 2012 and earned a revenue of more than 12.65 billion RMB yuan (about 2 billion U.S. dollars), rising by 21.7 percent and 30.3 percent respectively year on year. [Xinhua/Purbu Zhaxi]