 After lengthy negotiations, Gao Huan decided to send Princess Le'an (樂安公主) for Yujiulü Anluochen.In 541, the khagan sent 1,000 horses and asked to bring the princess, who was now renamed Princess Lanling (蘭陵公主).In view of the importance of an alliance with the Rouran, Gao Huan personally presided the collection of the dowry and led the princess and her retinue to Rouran.