Harmatta János (szerk.): From Alexander the Great to Kül Tegin. Studies in Bactrian, Pahlavi, Sanskrit, Arabic, Aramaic, Armenian, Chinese, Türk, Greek and Latin sources for the history of pre-Islamic Central Asia - Collection of the sources on the history of Pre-Islamic Central Asia. Series 1. 4. (Budapest, 1990)
I. Ecsedy: Chinese-Turk Political Connection and Conflict in 615 A. D.
132 I. ECSEDY: CHINESE—TURK POLITICAL CONNECTION the middle of the 8th century; while the latter «western», i.e. stronger group of tribes, under Hsieh-yen-t’o rule, founded an empire in the North-West in the 620’s, contemporarily with the consolidation of the T’ang Empire;28 and the rest of them, in a growing hostility toward the «Northern», i.e. Eastern Turks and China as well, started — from the («west of») Altai region — westward.29 Budapest. 88 Cf. CTS, CIC, B, 1493b, on the T’ieh-le; HTS, CCXVII, B, 1527b, on the Hsiehyen-t’o (the name being often abbreviated in the records in a form yen-t’o). On the oyuz character of the T’ieh-le tribes, being the enemies of the Turk Empire (e.g.) in the 8th century, see the works of K. Czeolédy, e.g. On the Numerical'composition of the Ancient Turkish Tribal confederations. Acta Orient. Hung. 25 (1972), 275 — 281; see the tribes of the Uighurs (beyond their «own» 9 ones): HTS, CCXVII, A, 1520b. The tribes in question are documented in detail by the author of this paper in the program Ethnonymica Turcica (Szeged, József Attila University, Altaistic Chair). 29 On the Hsieh-yen-t’o see HTS, CCXVII, 1527b—1529a (cf. Chav annes: Documents . . ., 94 — 96). I