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The Tibet autonomous region, called "sweet", hereinafter referred to as "hide", the capital of Lhasa. Is located in the southwest of the qinghai-tibet plateau, is located in north latitude 36 ° 50 'to 26 ° 53', longitude 78 ° 25 '99 ° 06' between. North of xinjiang uygur autonomous region, east sichuan, northeast close to qinghai province, southeast of connection in yunnan province, south with Burma, India, Bhutan, Nepal and other countries adjacent, west and bordering on Kashmir, land border of more than 4000 kilometers, north and south 900 kilometers wide, most things up to more than 2000 kilometers, is China's southwestern border of important portal, without the sea.