THE DEVELOPMENT OF GOVERNMENT INSTITUTIONS 79
iat played any significant role in political decisions. There was also the
Censorate (Yii-shih t'ai), the Han-lin Academy, the Office of Historiogra-
phy, and various groups of court scholars, all organized along Tang lines.
There was an imperial household department, various specialized courts
(ssu)
and directorates
(chieri),
a formal establishment for the heir apparent, and a
military organization of royal guards
{wet).
The basic provincial organization also began to take shape along Chinese
lines.
Beside the Supreme Capital there was now an Eastern Capital at Liao-
yang, controlling former territories of Po-hai, and a Southern Capital at
modern Peking, controlling the former Chinese territories acquired in 937.
A fourth Central Capital was to be added in 1007, built on the site of
the
old
Hsi capital, at the time when the Hsi were finally assimilated into the
Khitan state. Last, a Western Capital at Ta-t'ung was established in 1044.
Each of
these
capitals was not so much an alternative seat of imperial govern-
ment (as, e.g., Ch'ang-an and Lo-yang had been in early T'ang) as the
regional center of a circuit, a local administrative network. Each of these
circuits seems to have followed administrative procedures appropriate to its
own population. The picture was further complicated during the tenth cen-
tury by the fact that two of the larger groups of conquered peoples, the Hsi
and Po-hai, retained a great degree of autonomy under their own leaders and
paid tribute as vassals rather than taxes as subjects. Only in the early eleventh
century were these populations fully incorporated into the Liao system of
government.
The viceroys
(liu-hou)
of these capitals wielded great power over their
circuits, especially those of the Southern and Eastern capitals, who were
among the most powerful men in the Liao system of government. They
presided over a hierarchy of numerous prefectures and counties that provided
the field administration for the settled regions of the empire and that in
many areas coexisted with tribal organizations ruled on traditional lines.
The system of government in the Southern Region was similar, at least in
its outward forms, to that of the T'ang and the Five Dynasties. Many of its
officials, especially at the lower and middle levels, were ethnic Chinese.
Historians familiar with Chinese institutions of
the
ninth and tenth centuries
may, however, be tempted to ascribe an unreal importance to the holders of
titles which, in the Chinese system, implied great power and influence.
There was one important distinction, however, between the officers of the
Northern and Southern regions, apart from their different racial origins. Liao
emperors were constantly on the move and resided in their Supreme Capital
only for short periods each year as they traveled from one traditional seasonal
hunting camp
(na-po)
to the next. Twice a year, in the fifth and tenth lunar
months, the officers of both the Northern and Southern administrations were
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