Actors perform during an open rehearsal of Wagner's opera "Der Fliegende Hollander" at the National Center for the Performing Arts in Beijing, capital of China, March 15, 2012. The opera represents the begining of Wagner's artistic maturity and marks his first step towards the creation of "Music Drama". It will be on staged on April 3, as the opening program of the NCPA Opera Fesitval 2012. (Xinhua/Luo Xiaoguang)