erably as tenants on the farms of the gentry between Nanking and
Hangchow. Others migrated farther to the south, across Kiangsi into
southern Fukien. These migrants seem to have been the ancestors of the
Hakka which in the following centuries continued their migration towards
the south and who from the nineteenth century on were most strongly
concentrated in Kwangtung and Kwangsi provinces as free farmers on hill
slopes or as tenants of local landowners in the plains.

The influx of migrants and the increase of tenants and their poverty
seriously threatened the state and cut down its defensive strength more
and more.

At this stage, Chia Ssu-tao drafted a reform law. Chia had come to the
court through his sister becoming the emperor's concubine, but he
himself belonged to the lesser gentry. His proposal was that state funds
should be applied to the purchase of land in the possession of the
greater gentry over and above a fixed maximum. Peasants were to be
settled on this land, and its yield was to belong to the state, which
would be able to use it to meet military expenditure. In this way the
country's military strength was to be restored. Chia's influence lasted
just ten years, until 1275. He began putting the law into effect in the
region south of Nanking, where the principal estates of the greater
gentry were then situated. He brought upon himself, of course, the
mortal hatred of the greater gentry, and paid for his action with his
life. The emperor, in entering upon this policy, no doubt had hoped to
recover some of his power, but the greater gentry brought him down. The
gentry now openly played into the hands of the approaching Mongols, so
hastening the final collapse of the Sung. The peasants and the lesser
gentry would have fought the Mongols if it had been possible; but the
greater gentry enthusiastically went over to the Mongols, hoping to save
their property and so their influence by quickly joining the enemy. On a
long view they had not judged badly. The Mongols removed the members of
the gentry from all political posts, but left them their estates; and
before long the greater gentry reappeared in political life. And when,
later, the Mongol empire in China was brought down by a popular rising,
the greater gentry showed themselves to be the most faithful allies of
the Mongols!

(5) The empire of the Juchen in the north (1115-1234)

1 _Rapid expansion from northern Korea to the Yangtze_

The Juchen in th