Bullet train stewardesses hold a chopstick in their mouth to practice smiling for the Spring Festival travel rush in Chengdu, capital city of Southwest China's Sichuan province, Jan 6, 2012. The local rail authority organized the special training program for bullet train staff to improve their service during the travel rush which started on Sunday. [Photo/CFP]

Bullet train stewardesses practice an elegant sitting posture during a training program in Chengdu, capital city of Southwest China's Sichuan province, Jan 6, 2012. [Photo/CFP]