Yang Xuangan
Chu Suiliang was born in Hangzhou in 596, during the reign of Emperor Wen in the Sui dynasty. His father, Chu Liang (褚亮), had been a mid-level official during both the Chen and Sui dynasties, and was known for his literary abilities. After Emperor Wen's death in 604, Chu Liang continued to serve Emperor Wen's son, Emperor Yang, but Emperor Yang was jealous of his abilities, and when the general Yang Xuangan rebelled in 613 and was quickly defeated, he accused Chu Liang of being friendly with Yang Xuangan and demoted him to be the census official for the distant Xihai Commandery (西海, in modern Haibei Tibetan Autonomous Prefecture, Qinghai). Chu Suiliang followed his father there.