In Yueji and Department ci, there are sentences such as Heaven is inferior to earth and birds of a feather flock together. Because the passage of Yueji is written more naturally and in one fell swoop, while Yueji appears to be reluctantly stiff and scattered and procrastinating
Yueji and Department ci are both Confucian classics, and the date of completion has not yet been determined
it must be that Yueji follows or quotes the phrase of Department ci.