evidence: See the U.S. Department of State’s Fact Sheet on the People's Republic of China for information on U.S.-China relations. [...] The Tibet Autonomous Region (TAR): The TAR requires special permits for tourist travel, most often obtained through a travel agent in the PRC. If you do enter a restricted area without the requisite permit, you could be fined, taken into custody, and deported for illegal entry. To learn more about specific entry requirements for the TAR or other restricted areas, check with the Embassy of the People’s Republic of China in the United States of America. [...] Most roads and towns in Tibet, Qinghai, parts of Xinjiang, and western Sichuan are situated at altitudes over 10,000 feet. Take appropriate precautions to prepare for and be alert to altitude sickness.