《南齐书·志·卷十》
而且汉魏以来，太子宫僚齐备，奴仆的礼节，具体讲是服三个月丧。
且汉魏以来，宫僚充备，臣隶之节，具体在三。
Furthermore, since the Han and Wei, the crown prince’s palace has been fully staffed, and the etiquette for slaves is, specifically, to wear mourning clothes for three months.