Different classes of piety had different piety content and criteria, which embodied various social and political significance in a Confucianist society governed by piety.

• 不同等级的孝道分层，各有不同的行孝内容及行孝标准，在儒家＂孝治＂施政的统治秩序中，体现着各不相同的社会政治意义。