针头线脑 (針頭線腦) zhēn tóu xiàn nǎo

zhēn tóu xiàn nǎo set phrase bits and pieces
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '針頭線腦'; Guoyu '針頭線腦'; Mathews 1931 '針頭線腦', p. 38)