How did Emperor Wendi choose a concubine for Yang Guang?

When Emperor Wendi of Sui Dynasty ascended the throne and proclaimed himself emperor, China was still in a state of division, and there were two small imperial courts, Liang and Chen, to the south of Sui Dynasty. Liang Ducheng was in Jiangling (now Hubei), which was called "Hou Liang" in history. Hou Liang's territory is very small. Since the founding of the People's Republic of China, Xiao Ji has been attached to the Northern Dynasties and is a "child emperor". When Emperor Wendi proclaimed himself emperor, Xiao Kui, the son of Xiao Guan, ruled the back beam, and Emperor Wendi sent a special envoy to give him 520 yuan. Silver 1000 Liang, cloth and silk IIXXXj, 500 horses, as a sign of favor. In the second year, Emperor Wendi of Sui sent someone to Jiangling to choose a concubine for Yang Guang, the king of Jin. After divination, all the beautiful women selected are unlucky. Xiao Kui remembered that she had a daughter living in her uncle's house. Why not let her have a try? So I sent someone to get my daughter, divining good or bad luck, and got a "good or bad luck", so Xiao Kui's daughter became Yang Guang's concubine, and later Yang Guang became emperor and Xiao Fei became queen, which is another story.