FBI opens criminal investigation into Baltimore bridge collapse, AP source saysRoadside concerts become a hit in SW China's GuizhouChina issues stamps featuring UNESCO site Pingyao ancient cityHighlights of beach volleyball match at 19th Asian GamesRoof of the world inhabited since 50,000 years ago: archaeologistsChina releases typical cases endangering national securityFor Chinese youngsters, reading is the new social networking: surveyShanghai sculpture show sees Rodin, Sanxingdui in dialogueChess Preview: China's world champion Ding seeking first Asian Games goldCountry lifestyle attracts people to village