《资治通鉴·宋纪·宋纪四》
于是，赵广就推举程道养为蜀王、车骑大将军、益梁二州州牧，改年号为泰始，设置文武百官。
广乃推道养为蜀王、车骑大将军、益、梁二州牧，改元泰始，备置百官。
So, Zhao Guang pushed Cheng Daoyang to be the King of Shu, General of Chariots and Cavalries, and the Prefect of Yi and Liang States, and he renamed his era name to Taishi, and appointed civil and military officials.