As part of the agreement, he also sent nobles and family members to Chang'an to study at Tang's imperial university, in an old custom which made them de facto hostages, while they learned Chinese customs and culture for better relationship.
Som en del af aftalen sendte han også adels- og familiemedlemmer til Chang'an for at studere på Tangs kejserlige universitet i en gammel brugerdefineret, der gjorde dem faktisk gidsler, mens de lærte kinesisk skik og kultur for et bedre forhold.