Policy advisers have called for legislation that demands the publication of officials' assets and regulates online allegations of officials' abuse of power.

"Anti-corruption efforts should not rely solely on online exposure," said Fan Songqing, deputy secretary-general of Guangzhou's political consultative conference. "Disciplinary watchdogs should take active action to prevent corruption."

Online whistle-blowing has proved increasingly effective in catching rogue officials, with a growing number being investigated and even removed from their posts.