Karasahr became one of the Tang empire's Four Garrisons of the Pacified West (the others being Kucha, Khotan, and Kashgar) when the headquarters of the Protectorate of the Pacified West was moved from Gaochang to Kucha in 658 or 659, but it is not clear whether any Tang troops were stationed in Karasahr between 648 and 658.
Karasahr blev et af Tang-impirets fire Garnisoner i det pacificerede vest (de andre er Kucha, Khotan og Kashgar), da hovedkvarteret for protektoratet for pacificerede vest blev flyttet fra Gaochang til Kucha i 658 eller 659, men det er ikke klart, om nogen Tang-tropper blev stationeret i Karasahr mellem 648 og 658.