What's Mandarin for "Pardon?"

Bjork's Shanghai surprise: a cry of 'Tibet!' | World news | guardian.co.uk

International Icelandic diplomat Bjork confuses an audience in China:

Bjork is under attack after shouting "Tibet! Tibet!" at the end of her song Declare Independence at a concert in Shanghai.

The crowd did not erupt into jeers, however:

...another audience member, Gabriel Monroe, told the Guardian most people did not register the remark at first.

"One of my friends thought she was saying 'to bed', because she had mentioned it was the last song," he said.