Attendants of the Beijing-Shanghai high-speed trains practice their smiles by chomping on chopsticks in Shanghai on June 15, 2011. The crew on the rail route, including 90 conductors and 313 attendants, were selected from numerous applicants and have undergone rigorous training. The 1,318-kilometer rail starts commercial service at the end of this month, after trial operations that began May 11.[Photo / CFP]