A man stops in front of the memorial wall bearing names of victims of the 1976 earthquake in Tangshan, north China's Hebei Province, July 28, 2012. Saturday marked the 36th anniversary of the Tangshan earthquake. Tangshan lost 240,000 lives to a devastating 7.8-magnitude earthquake on July 28, 1976, which was believed to be one of the deadliest natural disasters of the 20th century. [Photo/Xinhua]

A man puts a flower on the name of his loved one who was killed in the 1976 earthquake on the memorial wall bearing the names of the earthquake victims in Tangshan, north China's Hebei Province, July 28, 2012. Saturday marked the 36th anniversary of the Tangshan earthquake. Tangshan lost 240,000 lives to a devastating 7.8-magnitude earthquake on July 28, 1976, which was believed to be one of the deadliest natural disasters of the 20th century. [Photo/Xinhua]