斷子絕孫 [断－绝孙]

Jyutping dyun6 zi2 zyut6 syun1
Pinyin duàn zǐ jué sūn

Definitions (Wiktionary)

phrase, as a curse, idiomatic, often
to have no descendants
(syn.) 绝子绝孙, 絕子絕孫

斷子絕孫 [断－绝孙]

Jyutping
Pinyin duàn zǐ jué sūn

Definitions (CC-CEDICT)

to die without progeny
(offensive) may you die childless
may you be the last of your family line