《国语·楚语·观射父论祀牲》
日月交会在苍龙七宿的尾宿时，地气收敛，天气晴爽，各种作物都收回家储藏，群神都频频活动。
日月会于龙，土气含收，天明昌作，百嘉备舍，群神频行。
When the sun and the moon meet at the Weisu constellation of Canglong Seven Mansions, the earth's gas converges, the weather is fine, and all crops are harvested and stored at home, and all the gods are frequently active.