Some 100 "campus ambassadors of AIDS prevention" pose to form the shapes of red ribbons in front of a museum during an activity in Taipei, southeast China's Taiwan, on Nov. 30, 2010, a day ahead of the World AIDS Day. [Xinhua]

Actress Tammy Chen poses to form the shape of a red ribbon in front of a museum during an activity in Taipei, southeast China's Taiwan, on Nov. 30, 2010, a day ahead of the World AIDS Day. [Xinhua]