A photographic exhibition on China's remarkable changes over the past 30 years was staged in Putuo Library on December 1.
These photos were shot by Martin Kummer, a journalist with German newspaper The Hamburg Morning Post.
Kummer took thousands of pictures reflecting life in China when he paid his first visit to China in 1976 as a journalist.
Exactly 30 years later in April 2006, Kummer, already in his 60s, made another China tour. Kummer spent five weeks re-visiting the same places he toured 30 years ago, including Beijing , Shanghai , Guilin , Guangzhou , Shenzhen and Hong Kong , taking another batch of pictures.