
142 THE
LIAO
In 1113 A-ku-ta was elected ruler of the Jurchen by the tribal leaders,
succeeding his elder brother Wu-ya-shu (r. 1103-13), and was given the
customary Chinese title of military governor by the Liao court. A-ku-ta
immediately began to harass the Liao, raising a grievance that had rankled for
years:
the question of A-shu, a Jurchen chieftain who had opposed the Wan-
yen hegemony and taken refuge in Liao territory. A-ku-ta repeatedly and in
vain demanded his return and began to build fortifications on the frontier. In
the late autumn of 1114, A-ku-ta's demands having once again been refused
by the Liao court, he attacked Ning-chiang Prefecture, the main frontier
trading station and the place where the Liao emperors had customarily re-
ceived the Jurchen leaders.
At first T'ien-tso was not seriously alarmed and left the local forces to deal
with the invaders, though he reinforced them with some Po-hai detachments
sent from the vicinity of the Eastern Capital. This modest force was utterly
defeated: The Liao had completely underestimated the strength and ferocity
of the Jurchen. In the tenth month of 1114, T'ien-tso mobilized a force of
select Khitan and Hsi troops under the command of Hsiao Ssu-hsien, the
younger brother of his northern chancellor Hsiao Feng-hsien, but this force,
too,
was surprised and defeated on the Sungari River, with very heavy losses.
Hsiao Ssu-hsien, in spite of his incompetence, escaped punishment, which
helped demoralize the Khitan generals. By the end of
the
year, several border
prefectures near Ning-chiang had surrendered to the Jurchen, and some of
the neighboring tribes had also joined them.
T'ien-tso then turned to diplomacy and sent envoys to open peace negotia-
tions with A-ku-ta at the beginning of 1115. But late in the first month A-
ku-ta had declared himself emperor of a new Chin dynasty. He rejected the
letters from the Liao court because they addressed him by name, not by his
new title, and he continued to demand the return of A-shu and also the
withdrawal of the Liao garrison from Huang-lung fu, the major administra-
tive center in the region.
Sporadic border fighting continued throughout 1115, with the Jurchen
usually gaining the upper hand. Meanwhile, both sides prepared for a new
round of warfare.
Early in the autumn of 1115 T'ien-tso assembled a massive army under his
own command, west of the Sungari. In the ninth month, before he could
bring this force into action, A-ku-ta had already conquered Huang-lung fu,
the easternmost major military outpost of the Liao. Then, when T'ien-tso
finally crossed the Sungari River
into
Jurchen territory in the winter of 1115,
his punitive campaign was undermined by a conspiracy to dethrone him and
install his uncle, Prince Ch'un (1063-1122; Khitan name Nieh-li; posthu-
mously canonized as Hsiian-tsung), as emperor.
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