Peking Opera star returns for an encore

Zhang Huoding is enough of an introvert to have been shocked when a young woman suddenly dropped to her knees in front of her after elbowing her way through the crowd.

"You're back at last!" she exclaimed, grasping the actress' hands.

The woman is Cao Huan, 22, a die-hard fan of Peking Opera. She is especially attached to Zhang, one of China's Peking Opera stars who has been absent from the stage since 2010.