Tocharians
Göktürks suzerainty (560 AD)

The early Turks of the First Turkic Khaganate then took control of the Turfan and Kucha areas from around 560 AD, and, in alliance with the Sasanian Empire, became instrumental in the fall of the Hephthalite Empire.

The Turks then split into Western and Eastern Khaganates by 580 AD. Tocharian royal families continued to rule Kucha, as vassals of the Western Turks, to whom they provided tribute and troops. Many surviving texts in Tocharian date from this period, and deal with a wide variety of administrative, religious and everyday topics. They also include travel passes, small slips of poplar wood giving the size of the permitted caravans for officials at the next station along the road.

In 618, king Suvarnapushpa of Kucha sent an embassy to the court of the Tang dynasty acknowledging vassalship.

In 630, the Chinese Buddhist monk Xuanzang visited the cities of the Tarim Basin on his pilgrimage to India. He later described the characteristics of Kucha (屈支国) in great detail in his Records of the Western Regions: 1) "The style of writing is Indian, with some differences" 2) "They clothe themselves with ornamental garments of silk and embroidery. They cut their hair and wear a flowing covering (over their heads)" 3) "The king is of Kuchean race" 4) "There are about one hundred convents (saṅghārāmas) in this country, with five thousand and more disciples. These belong to the Little Vehicle of the school of the Sarvāstivādas (Shwo-yih-tsai-yu-po). Their doctrine (teaching of Sūtras) and their rules of discipline (principles of the Vinaya) are like those of India, and those who read them use the same (originals)." 5) "About 40 li to the north of this desert city there are two convents close together on the slope of a mountain".
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