 Meanwhile, Dou incorporated many key Sui officials into his government, particularly entrusting Pei Ju with reorganizing his government in the form of an imperial one.In summer 619, Wang Shichong had Yang Tong yield the throne to him, ending Sui and establishing a new state of Zheng.In response, Dou cut off relations with Wang, and began to take on imperial style in his edicts and ceremonies, although he was still using the title of Prince of Xia and not emperor.