The TAR refers to China's current Tibetan borders and doesn't include these neighboring areas, though Tibetans still consider these areas part of Tibet. Second, under the terms of your Tibet ...

It was generally assumed at the time that Ekai followed a path along a valley that appears to be a shorter route on the map ... the national border. A high-ranking monk of Tibetan Buddhism ...

According to the authority, the maps shown in the textbook did not accurately draw the borders near the Aksai Chin area, those near the South Tibet area, and did not include the Diaoyu Islands ...