《明史·志·卷三十五》
从初丧到除去丧服，皇帝共祭十三坛，国内文武官祭祀一坛。
自初丧至除服，御祭凡十三坛，封内文武祭一。
From the beginning of the funeral to the removal of mourning clothes, the emperor officiated at a total of 13 altars, and civil and military officials in the country officiated at one altar.