The greatest compliment to his ability was that Noorhachu remained quiescent as long as he was on the frontier, but as soon as he was removed he at once resumed his aggression on Chinese soil. Meanwhile, Wanleh had been succeeded on the Chinese throne by his son, Chu Changlo, who took the name of Kwangtsong.
Ningtsong, the son and successor of Kwangtsong, ventured on one war with the Kins in which he was worsted. This the last of the Kin successes, for Madacou died soon afterward, just on the eve of the advent of the Mongol peril, which threatened to sweep all before it, and which eventually buried both Kin and Sung in a common ruin.
Hiaotsong was succeeded by his son Kwangtsong, and Oulo by his grandson Madacou, both of whom continued the policy of their predecessors. Kwangtsong was saved the trouble of ruling by his wife, the Empress Lichi, and after a very short space he resigned the empty title of emperor, which brought him neither satisfaction nor pleasure.