SURRENDER TO
T'ANG,
SETTLEMENT IN THE ORDOS 159
expanded northeastward. By 680 the Tibetans had conquered all of Ch'iang
territory, absorbing among other ethnic groups Tangut elements that were
called the Mi-yao (Tibetan: Mi-nag; the Tibetans called their T'u-yii-hun
subjects 'A-zha). Other Tangut groups, led by the T'o-pa, petitioned the
T'ang authorities for permission to abandon their homeland in the grasslands
of Ho-ch'ii and to move into China. The emigrants were relocated in Ch'ing-
chou (Ch'ing-yang, modern Kansu) and reorganized in several specially cre-
ated tribal prefectures controlled by the Ching-pien government-general, a
transplantation of the former Sung-chou government-general.
A second migration of Tanguts into T'ang border territories followed in
692.
By some
accounts this group numbered
as
many
as
200,000
persons,
who
were resettled in ten new tribal prefectures established in the southern Ordos,
between Ling-chou and Hsia-chou.
9
Toward the end of
the
seventh century, a
powerful second Eastern Turkish (T'u-chiieh) khaghanate formed in the steppe
and subsequently directed numerous raids against the Ordos and northern
Shansi.
Just when the T'ang had concluded a treaty with the Turks and opened
a large border market in Shuo-fang in 721-22, a Sogdian-led revolt of surren-
dered Turks who had been settled in the Ling-chou and Hsia-chou area en-
gulfed the Ordos region and required over a year to suppress. Although some
Tanguts joined the uprising, their great chieftain T'o-pa Ssu-t'ai, governor-
general of Ching-pien and a direct descendant of T'o-pa Ch'ih-tz'u, lent sup-
port to T'ang troops and was duly rewarded.
10
The revolt may have been inspired by T'ang efforts to turn the resettled
Turks into farmers. Its failure, however, weakened the formerly paramount
position of the T'u-chiieh and Sogdians in the Ordos, and by the time the An
Lu-shan rebellion began in 755, the Tanguts had become the dominant
people on the borders of the Ordos south of the Yellow River. Moreover, by
744 the second Eastern Turkish khaghanate had collapsed, and control of the
steppes had passed to one of its subordinate tribal unions, the Uighurs. In
time the Uighurs became the Tanguts' chief rivals for control of
the
lucrative
horse and livestock trade among the southern steppe, Ho-hsi, the Ordos, and
China.
During the An Lu-shan rebellion (755-63) and the subsequent Tibetan
invasion of northwestern China, many Tanguts seized the opportunity to raid
9 For Tangut migrations and resettlements see Friedland, "A reconstruction of early Tangut history," pp.
131-36, 165-75,
2
".
2
3<>, "• 17; Wang P'u (922-82) et al., comps., T'anghuiyao(Shanghai, 1935;
repr. Peking, 1955), 98, p. 1756 (hereafter cited as THY); Ou-yang Hsiu (1007-72) and Sung Ch'i
(998—1061), comps., Hiin
T'ang
shu (Peking, 1975), 221A, pp. 6215-16 (hereafter cited as HTS).
10 Denis C. Twitchett, "Hsiian-tsung," in Sui and
T'ang
China, 589—906, pt. 1, vol. 3 of
The Cambridge
history of China, ed. Denis C. Twitchett and John K. Fairbank (Cambridge, 1979), pp. 435-36;
Edwin G. Pulleyblank, "A Sogdian colony in Inner Mongolia," T'tmngpao, 41 (1952), pp. 317—56;
Friedland, "A reconstruction of early Tangut history," pp. 212—216.
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