Ballet teacher ‘laughed as he sexually assaulted dancer’

A former English National Ballet principal laughed as he pinned a teenage pupil to the ground and sexually assaulted her, a court heard. Yat-sen Chang, 49, is said to have sexually assaulted four girls, aged between 16 and 18, while working as a teacher at a dance academy in London. Cuba-born Chang allegedly used his position to groom and abuse the complainants, then aged between 16 and 18. In her interview to the police, one of the alleged victims described…