It was then that Miss Wang started to argue, retorting that the last time she came to Dongshigu, on September 21, a bag was put over her head before she was beaten and robbed and yet the police offered her no protection and refused to investigate her case. After firing a particularly strong insult at the officer, that slap suddenly rang out. But what would be grounds for an assault charge in Britain was brushed off as just another unavoidable knock.