A very rare poster on the campaign against the 'rightists', consisting of two sheets. A larger image is here.

Texts in the left part:
black characters in the red squares: 帮助党整風! - Bangzhu dang zhengfeng! - Help the party's rectification!
white characters on the blue banner: 向資本主义前進 - Xiang ziben zhuyi qianjin - Forge ahead to capitalism.
on the bucket: 污蔑 - Wumie - slander.

Texts in the right part:
on the red banner: 社会主义建設 - Shehui zhuyi jianshe - Construction of socialism
on the book: 馬列主义 - Malie zhuyi - Marxism-Leninism.

The imprint mentions a "responsible editor": Zhang Zhimin (責任編輯 章志敏).