yī​jiā​yán

school of thought

一家言 yī​jiā​yán
school of thought
one's own unique and systematic school of thought or set of views
Yijia Yan
(proper noun) a collection of poems and essays written by the Qing Dynasty author Li Yu, also known as "Li Liweng Yijia Yan"
authority
expert or authority in a specific field of study who has developed a unique system