Yang Gao (楊杲) (607-618), nickname Jizi (季子), was an imperial prince of the Chinese dynasty Sui Dynasty. He was the youngest son of Emperor Yang. Yang Gao was born in 607, after Emperor Yang had already become emperor. His mother was Consort Xiao, of whom little is known, and she might have been a sister or a relative of Emperor Yang's wife Empress Xiao. In 613, he was created the Prince of Zhao. Wikipedia
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