Serving Parents with Filial Piety This twelfth-century- C.E. illustration of a passage in the Classic of Filial Piety shows how commoners should serve their parents: by working hard at productive jobs such as farming and tending to their parents’ daily needs. The married son and daughter-in-law offer food or drink to the older couple as their own children look on, thus learning how they should treat their own parents after they become aged. (National Palace Museum, Taiwan/The Art Archive at Art Resource, NY)