In 77 BC, a controversial incident involving the Xiyu (modern Xinjiang and former-Soviet central Asia) kingdom of Loulan (on northeastern edge of the Taklamakan Desert) would unfold itself, although whether Emperor Zhao played any role in the decision-making is unclear. A few years earlier, the King of Loulan had died, and with Xiongnu support, one of his sons, Angui () succeeded him, and Angui started a policy of befriending Xiongnu and resisting Han, particularly because Luolan's geographical location meant that it was often ordered by Han to escort its imperial messengers, who were also rude to Luolan officials. Huo sent an imperial messenger, Fu Jiezi () to assassinate Angui. Fu accomplished this by claiming that he was there to reward Xiyu kings with jewels and other precious items, and then, setting a private meeting up with Angui, he stabbed him in the heart, and then, warning that any further action would bring a large Chinese army, he got the Loulan nobles to submit and make a brother of Angui, Weituqi (), who was friendly to Han, king. Loulan was renamed Shanshan. (This incident was controversial in Chinese history in that many historians believed that this was one incident in which an assassination of a foreign king was thoroughly unjustified, particularly in the method it was carried out—using jewels as bait. Other historians believed that Angui should be punished for his failure to submit.)