The word "seven prisons" is not common. Too fast, too fast is the highest etiquette of ancient sacrifices. Cattle are used for sacrifice. There is a saying in common history books that "it is too urgent to be one", and sacrificing to the Emperor of Heaven is at least "too urgent". Seven prisons may mean seven "too fast", that is, at least seven cows.

It is also a great honor that the meat (roe) used for ancient sacrifices should be taken out for the participants to eat after the sacrifice. Therefore, sacrifices are gradually combined with feasts. In the Eastern Zhou Dynasty, there were governors who disagreed because of differences.

This seven-ceremony ceremony should refer to a banquet with extremely high specifications.