[Photo by Lu Chengde/provided to China Daily]

Lu Chengde, 80, is a Shanghainese living in Suzhou. He started taking pictures 10 years ago. So far he has taken about 100,000 pictures.

Lu said: "Photography has brought me a lot of fun.The streets are a treasure trove for me－a kaleidoscope. I'd feel guilty idling at home, if not spending time with my friends on the street. In fact, we elderly people learn photography, merely for fun, like a form of disease prevention. The key is to be happy. I've made many friends while taking pictures. "