Its ruling house had the surname Ji (姬), and held the noble rank of Hou (侯), roughly comparable to a marquess.

During the initial stages of the Spring and Autumn period from 771 BCE, the power of Sui's neighbor the State of Chu grew considerably.

By the time of the Battle of Chengpu in 632 BCE, the State of Jin had held talks with all the Hanyang Ji Vassals.

Based on the History of Lu section of the same book later author Du Yu believed that Chu restored Sui's independence as a marquessate in return for their protection of King Zhao.

Among other artifacts discovered were Western Zhou period bronzes detailing the founding of the Zeng State by descendants of Nangong Kuo, enfeoffed in Suizhou to pacify the local Huaiyi tribes.