Motorcyclists line the streets with large signs in search of a missing 40-year-old mental heath patient in Chengdu city, Southwest China's Sichuan province on July 2. The man has been missing since June 29. When the missing man’s father realized his son was missing he informed his elder son Peng Zhongyuan who works in a store and the son’s boss let other neighboring store owners know. Then more than 100 people working on the same street voluntarily formed a search team. Some of them even contributed 2,000 yuan to put a missing person’s advertisement on local television and closed their shops to help search.[Photo/CFP]

The missing man’s father walks around a bus station with a lost notice of his son in Chengdu city, Southwest China's Sichuan province on July 4, 2012.[Photo/CFP]