So ended the first act of the tragedy, but it was not to be the last. A Mongol residency was established at Song-do and Mongol governors were stationed at important centers throughout the country. The Mongol resident insisted upon entering the palace by the middle gate which the king alone used, but it was shut and barred and he was not able to carry his point. When the tribute above mentioned reached Gen. Sal Ye-t‘ap he expressed the greatest dissatisfaction with it because it fell so far short of what was demanded and he imprisoned the messenger who brought it. The king sent an envoy to the Mongol capital saluting the emperor as suzerain for the first time. Chapter VI. The king moves to Kang-wha.... a slave rebellion.... Mongol anger.... second invasion.... Mongol charges.... popular insurrections.... palace building.... the north occupied by Mongols.... Mongols not good seamen.... suffering and distress.... nature of Mongol occupation.... diplomacy.... temporary peace.... Gayuk Khan.... Mangu Khan.... efforts to get the king out of Kang-wha.... great invasion of 1253.... an urgent letter.... king decides not to remove.... great fortress falls.... impossible demands.... siege of Ch‘un-ch‘ŭn.... Ya Gol-dă meets the king.... the king promises to return to the capital.... a ferocious governor-general.... exchequer depleted.... Cha Ra-dă before Kang-wha.... a beautiful reply.... a new viceroy.... succession of disasters.... viceroy overthrown.... Mongol ravages.... the north defenseless.