Many trade caravans were stranded west of Shanshan. They heard that the imperial army had advanced all the way to the Western Regions, and immediately gathered their money and goods. Upon arriving at Shanshan, they indeed saw flags with the "Zhao" character and the "Hua" character, so they eagerly sought refuge.
The imperial army did not refuse their request and escorted them back from the Western Regions to Luoyang.
Of course, they were sensible people who could afford a small protection fee.
The most affluent among them was Zhao Hu's caravan.
Firstly, they had a large group and carried the most goods; secondly, their master had connections with the emperor, and the leader was the master's grand-nephew. Even for the sake of Prince Qin, they were willing to pay the fee.
