Feng Dexia appeared to have gotten to Tibet around the same time.
In the fall of 638, Tibetan forces, apparently commanded by Songtsän Gampo himself, then raided the Tang frontier city of Songzhou (松州, modern Songpan County in Sichuan), but meanwhile sending emissaries to the Tang capital Chang'an, again offering tributes and declaring that they were intending to welcome a princess.