A family photo of five children dressed in the same style. Author Jin Yongquan used the photograph in his book “Unnamed Photos,” about life in China in the latter half of the 20th century. Image credit: Type Publishing International

A family photo taken during the Lunar New Year holidays in 1961 shows how much bigger families were back then. Image credit: Type Publishing International

Another photo taken during the holiday in 1961 shows a family of five children and their mother. Image credit: Type Publishing International

Boys posing for photos. Image credit: Type Publishing International

Headshots of children. Image credit: Type Publishing International

Jin did not take any of the photos in the book, which was published in October, but rather found them in flea markets and antique shops. Image credit: Type Publishing International

A couple kissing. Image credit: Type Publishing International

A young woman poses nude. Image credit: Type Publishing International

A woman eats corn off the cob. Image credit: Type Publishing International

A girl in a military uniform, a characteristic style of the time. Image credit: Type Publishing International

A man lounges in a boat. Image credit: Type Publishing International

A faded photo of a woman sitting on an inflatable inner tube at the beach. Image credit: Type Publishing International

A personal photo of a man sitting next to a tree smiling. Image credit: Type Publishing International

A photo catches a girl getting dressed. Image credit: Type Publishing International. Xiangwai Artha, an arts sharing platform, contributed to the gallery.