Correct

老三篇

/ lǎosānpiān /
Strokes

Definition

Lao San Pian, three short essays written by Mao Zedong before the PRC was established

Example

As a Noun

Three Old Essays [The Three Articles by Mao Zedong: Serve the People (《为人民服务》) In Memory of Norman Bethune (《纪念白求恩》)and The Foolish Old Man Removes the Mountain (《愚公移山》)]