《北史·列传·卷二十八》
所以，《礼经》上说： 太子出生后，要举行大礼，让人抱着他，有司的官员严肃端庄，在南郊拜见。 
亡之与兴，道在于师傅。故《礼》云： 冢子生，因举以礼，使士负之，有司齐肃端冕，见于南郊。 
Therefore, the Book of Rites says: After the birth of the crown prince, a grand ceremony should be held, and officials should hold him solemnly and go to the southern suburbs to worship.