不孝有三，无后为大
bù​xiào​yǒu​sān​wú​hòu​wéi​dà

no heirs is the worst unfiliality

  1. 不孝 bù​xiào
    unfilial
    To be disrespectful or lack devotion to one's parents or elders; not showing filial piety
  2. 有 yǒu verb
    there is
    there is; there are; to exist; to occur or happen
  3. 三 sān numeral
    three
    the number three; 3
  4. ， wú
    non-Chinese
  5. 无后 無後 wú​hòu
    heirless
    to have no descendants or offspring; specifically to have no son to continue the family lineage
  6. 为 為 wéi verbpreposition
    to be
    to be; to become; to act as; to serve as; to take as
  7. 大 dà adjective
    big
    big; large; great; vast; high in scale or intensity; (of a person) old; adult