A student of the Sofia University performs cross talk during the preliminary of the 9th Chinese Bridge Chinese Proficiency competition in Sofia, capital of Bulgaria, May 28, 2010. [Xinhua photo]
![A student of the Sofia University performs cross talk during the preliminary of the 9th Chinese Bridge Chinese Proficiency competition in Sofia, capital of Bulgaria, May 28, 2010. [Xinhua photo]](http://images.china.cn/attachement/jpg/site1007/20100531/001372a9a93f0d6da7bc3b.jpg "A student of the Sofia University performs cross talk during the preliminary of the 9th Chinese Bridge Chinese Proficiency competition in Sofia, capital of Bulgaria, May 28, 2010. [Xinhua photo]")
