The Religious System of China - Its Ancient Forms, Evolution, History and Present Aspect Manners, Customs and Social Institutions Connected Therewith; Book I., Disposal of the Dead, Part III, the Grave (Second Half) #232612

The simple conclusion is, that family graves must have been of common prevalence in the ancient Chinese Empire. The custom of living together in clans, each composed of the descendants of one family, greatly favoured this state of things, naturally turning the burial ground of each settlement or village into one large family grave-yard.