Chinese learners move from characters to idioms as the highest level. This free resource explains 「徒子徒孫」 below.
Here’s the idiom 「徒子徒孫」, with its definition and practical application described below.
Disciple and his disciple. A metaphor for people who pass down their lineage (with a derogatory meaning).
The Mandarin pronunciation of this idiom is :
tú zǐ tú sūn
while its Cantonese pinyin is :
tou4 ji2 tou4 syun1
Chinese idioms come in large numbers, with diverse meanings and usages, offering endless learning opportunities. We hope these resources make it easier for you to study Chinese.

