China NCPA Orchestra performs at City Hall in Philadelphia (2)

Musicians with the China National Centre for the Performing Arts Orchestra perform a string quartet at the City Hall in Philadelphia, the United States, on Nov. 6, 2014. The China National Centre for the Performing Arts Orchestra gave a performance in Philadelphia on Thursday, as part of the orchestra's 12-day tour to seven cities in North America. (Xinhua/Liang Menglong)