Three judges in Shanghai have been expelled from the Communist Party of China and another is on probation just days after online allegations emerged that they had been "entertained by young ladies". The prompt manner in which the allegations were investigated is in line with the authorities' promise to have "zero tolerance" for misdeeds by Party members and government employees.

The timely investigation and the punishments meted out to the offenders show the new leadership is prepared to back up its talk of housecleaning with action.

However, some questions have been left unanswered.