bù​xiào​yǒu​sān​wú​hòu​wéi​dà

no heirs is the worst unfiliality

不孝有三,无后为大 不孝有三,無後為大 bù​xiào​yǒu​sān​wú​hòu​wéi​dà
no heirs is the worst unfiliality
There are three ways to be unfilial, and having no sons is the most serious. From the works of 孟子 mèng​zǐ, this phrase is often used to emphasize the importance of carrying on the family line.