Feng Ba
In 411, the khan of Rouran, Yujiulü Hulü offered a tribute of 3,000 horses to Feng Ba and requested to marry Feng Ba's daughter Princess Lelang. (Princess Lelang was probably the daughter of Feng Ba's wife Princess Sun, as Feng Sufu suggested refusing the request and sending the daughter of one of Feng Ba's concubines instead.) Feng Ba, believing that an alliance with Rouran would be beneficial to his state, gave Princess Lelang in marriage to Yujiulü Hulü.