after conquering karasahr, she'er led his forces to the kingdom of kucha. the army of kucha, comprising 50,000 soldiers, lost to she'er. the king of kucha fled with his soldiers to the kingdom of aksu. after a forty-day siege, the king was captured and the kucha forces surrendered on 19 january 649. tang military garrisons were installed in the region to administer the annexed oasis states. these garrisons, known as the four garrisons of anxi, were located in kucha, kashgar, khotan, and karasahr.