《晋书·志·第二十章》
礼中所不要的，正是刑所收入的，礼中去掉的就归到刑中，相为表裹。
礼之所去，刑之所取，失礼即入刑，相为表里者也。
The things that are not desired in etiquette are exactly those that are classified as crimes, and those that are eliminated in etiquette are classified as crimes. They are the ins and outs.