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Years · 7th century

670

Year of the horse yund yıl

2 entries in Eastern steppe and Tibet.

Map of Asia in 670: the Tarim oases under Tibet, with an arrow to Kucha, the Tang and their protectorates, the western Göktürks under the Tang and the Umayyad Caliphate — 670: Tibet takes the Four Garrisons of the Tarim from the Tang. For thirty years the oases change hands again and again. Modern map; the extent of Tibet's hold is drawn, not recorded.

And beyond the steppe

China Tang Gaozong 649–683
Iran Umayyad Muawiya I 661–680
Korea Silla Munmu 668–681
Byzantium Heraclian Constantine IV 668–685

Eastern steppe

Environment · Lake Telmen stands 4.8 metres above its present level, a humid phase before the drying that follows (600–700)

Climate and the steppe empires · Orkhon valley

Tibet

Tibet takes the Four Garrisons of the Tarim from the Tang; the oases change hands repeatedly for thirty years

The Tibetan Empire · Tang · Tarim Basin · Kucha