Correct
四书
/ sìshū /
Strokes
Definition
Four , namely: the Great Learning 大学, the Doctrine of the Mean 中庸, the Analects of Confucius 论语, and Mencius 孟子
Example
As a Noun
Four Books ［i.e. The Great Learning (《大学》)， The Doctrine of the Mean (《中庸》)， The Analects of Confucius (《论语》)and The Mencius (《孟子》)］