Motherland, I love you

祖国我爱你
Zuguo wo ai ni
Motherland, I love you
1981, May
Shanghai renmin meishu chubanshe (上海人民美术出版社)
53x77.5 cm.
PC-1981-009

A post on sohu.com describes the three women as overseas Chinese, "returned from overseas to enjoy the beautiful scenery of the motherland. When climbing the towering and majestic Great Wall, facing the great rivers and mountains of the motherland, they couldn't help but cry out 'Motherland, I love you'." 
The camera probably is a Seagull - 海鸥 - produced in China.

Sources

https://www.sohu.com/a/652632277_121608744 (retrieved 20 July 2023)