《史记·八书·封禅书》
也是在春秋天不结冰，河川干涸及冰雪塞途时祷祭，与东方名山川相同，但祭祀所用牺牲牛渎以及配用礼具和珪币等各不相同。
亦春秋泮涸祷塞，如东方名山川；而牲牛犊牢具珪币各异。
Also it sacrifices when there's no ice in spring and autumn, the rivers dry up, and the ice or snow blocks the way, just like the famous mountains and rivers in the East, however the sacrificial cattle, the sacrificial rituals, and the jade coins used in the sacrifices are all different.