What does filial piety mean?

What does it mean that fortune tellers are not good at their filial piety?

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For the sake of human nature, the mind is smart, the fake can come true, the mouth is quick, the heart is empty, the resentment, the gentleman respects, the villain is jealous, the flesh and blood are helpless, the mind is healthy, the forward luck is not as good as the tree, the middle limit is lighter than the wealth, and the luck is great. As expected in the statement, all industries are revitalized, fame and fortune are built, and five people are full of stones.