This is a little ironic, because Gaochang's military aggression against Karasahr (a response to Karasahr's developing a trade route to China that bypassed Gaochang) had earlier served as one of the pretexts for the Tang campaign against Gaochang.
Dette er lidt ironisk, fordi Gaochangs militære aggression mod Karasahr (et svar på Karasahrs udvikling af en handelsrute til Kina, der omgåede Gaochang) tidligere havde tjent som en af ​​forkærelserne for Tang-kampagnen mod Gaochang.