2, replacing war with discussion, Taizong was called Tiankhan.
3. Respect national customs
4. Exchange envoys and cultural exchanges.
5. Cultivate moral politics.
Mainly manifested in:
(1) Emperor Taizong sent troops to attack East Turkistan, captured its leader Jie Li Khan alive, and gave preferential treatment instead of killing him; Set up a governor's office in East Turkistan, appoint a Turkic aristocrat as governor, and manage Turkic ministries; Hufu, Shaanxi Province manages the western region and the Amu Darya River basin from the southern foot of Tianshan Mountain to the west of Congling Mountain. Send ministers to escort Princess Wencheng into Tibet to marry Songzan Gambu.
(2) Wu Zetian established the Northern Court as the capital to manage the Northern Tianshan Mountains, including Altai Mountain and the vast western regions east and south of Balkhash Lake.
(3) Tang Zhongzong sent Princess Jincheng to Tibet to marry Kridê Zukzain.
(4) Emperor Xuanzong of the Tang Dynasty successively conferred the title of Da Zuorong as the king of Bohai County, Piluoge as the king of Yunnan, and Gulipero as Huairen Khan.
Ethnic Policy in the Tang Dynasty: The government of the Tang Dynasty adopted an enlightened policy of "When in Rome, do as the Romans do" in the border minority areas. Through the implementation: ① strengthen the border jurisdiction and set up administrative agencies; 2 pro-marriage; 3 grant; 4 war; ⑤ Various measures taken by the alliance strengthened the central dynasty's jurisdiction over ethnic areas, and the exchanges between the Han nationality and the frontier ethnic groups were unprecedented. At the beginning of the Tang Dynasty, the territory was unprecedentedly vast, stretching to the sea in the east, the Aral Sea in the west and Hinggan Mountains and Sakhalin Island in the northeast. South and South China Sea.