Computer lecturer ‘tried to kill wife outside their child’s school’

A university lecturer stabbed his estranged wife more than ten times outside their child’s parents evening, a court heard. Dr Ying Zhang, 55, a lecturer in computer studies would have killed Hannan Xiao, 52, who teaches cybersecurity, had a passer-by not stopped the attack by kicking him in the head, jurors heard. Ms Xiao sobbed ‘stop it, help me’ as she was stabbed with a kitchen knife in the chest, neck and back outside their child’s school in Barnet. Zhang…