 He then seized the important Chinese fortress of Kva-cu or Guazhou at (Anxi), to the southeast of Dunhuang, which contained supplies for all the Chinese-dominated territories as far as the Western Turks (Dru-gu) to the north and the Tazig (Arabs) to the west, and all this wealth fell into the hands of the Tibetans so that even ordinary Tibetans had fine Chinese silks to dress up in.However, the Chinese managed to drive the Tibetans away in 728, after a siege of eighty-days.In 724, according to a Chinese encyclopedia of 1013, the Chinese princess, Kim-sheng secretly wrote to the ruler of Kashmir asking for asylum, but apparently nothing came of this.