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This book uses the geographical environment as the entry point and the investigation and collection of military town and beacon garrison remains as clues to discuss the specific strategic role played by the entire Tianshan Corridor military defense system in the Tang Dynasty's management of the Western Regions under different situations. A systematic study was conducted on road traffic, especially the internal corridors of the Tianshan Mountains, and it was believed that many wars in the Tang Dynasty to ensure the security of the Turpan Basin, Tarim Basin, and Junggar Basin were carried out with the help of the internal and external corridors of the Tianshan Mountains and cooperation with surrounding nomadic tribes. Taking this as a starting point, the book comprehensively organizes and studies the traffic in the Tianshan Corridor.

The Tang-Tibet Ancient Road is a road from the interior to the Qinghai-Tibet Plateau, famous both at home and abroad because of Princess Wencheng and her pro-Tubo friends. It is also an important part of the Southwest Silk Road. This book combines cultural relics along the way with history through on-site inspections of the Stone Castle ruins along the Tang-Tibet ancient road, the Riyue Mountain Tang-Tibet dividing monument, the Princess Wencheng Temple in Yushu, the Karuo cultural sites in Tibet, the hometown of Tibetan kings, the Lesser and Lesser Zhao Temple and the Potala Palace in Lhasa, and the tombs of Tibetan kings in the Yalung Valley in Shannan.