Qiu shows the pieces of paper that list the owners' names and addresses from the ID cards he finds.

The idea to post the cards to their owners occurred to him when he found a wallet containing two ID cards in 2005.

"The owners would feel anxious when they discover their ID cards are lost. We feel the same when such things happened to us," Qiu says.

So he went to the post office to send them back at his own expense.

Several days later, two letters came in succession, the owners thanking him for his kindness.

"I am the kind of person who likes hearing 'thank you', it makes me happy when I help others," he says.

Qiu became inspired to become a one man lost-and-found service.

The ID cares are often thrown away with an empty wallet by thieves after they have taken all the money, Qiu says.

"People should take care of their wallets when walking on the street, especially the girls," Qiu says.

After years of experience, Qiu has come to know where he might recover an empty wallet on the street. It's usually in the thick grass around the area pickpockets frequent, he says.