《汉书·志·郊祀志下》
衹有泰山与黄河一年五祠，江水四祠，其余都祈祷一次，祭祀三次。
唯泰山与河岁五祠，江水四，余皆一祷而三祠云。
Only Mount Tai and the Yellow River were worshipped five times a year, the Changjiang (Yangtze) River was worshipped four times, and the others were implored once and sacrificed to three times.