From Flickr: “Emulate good technology to contribute to the motherland!” by chineseposters.net

Designer: Zhang Fanfu (张凡夫)
1951, July
Emulate good technology to contribute to the motherland!
Xuehao jishu, gongxian gei zuguo! (学好技术,贡献给祖国!)
Call nr.: BG E16/848 (IISH collection)

The map behind the workers shows the border area between China and (North) Korea.

More? See: chineseposters.net

via Flickr https://flic.kr/p/NS1e82