一龙九种，种种各别

比喻同一家庭的子孙，有好有坏，性格志趣也各不相同。

一龙九种，种种各别yī lóng jiǔ zhǒng , zhǒng zhong gè bié

a dragon begets nine offspring,each one different—family characteristics vary
❍ 原来这学中虽都是本族子弟与些亲戚家的子侄，俗语说的好，“～”，未免人多了就有龙蛇混杂，下流人物在内。(《红楼梦》 110)Now although all the pupils in this school were members of the Jia clan or relations by marriage,as the proverb so aptly says，“A dragon begets nine offspring,each one different.”And inevitably among so many boys there were low types too,snakes mixedup with dragons.