《明史·志·卷二十四》
于是在圜丘坛外泰元门的东方建造崇雩坛，形成制度，年成干旱就举行祷告，供奉太祖配祀。
乃建崇雩坛于圜丘坛外泰元门之东，为制一成，岁旱则祷，奉太祖配。
So Chongyu Altar was built to the east of Taiyuanmen outside the Yuqiu Altar, forming a system, and prayers were held in drought years, offering sacrifices to Taizu.