It’s anyone’s guess why she even bothered to meet the media. She didn’t offer an explanation – most people would not call her tirade anything of the sort. It explained nothing – Cheng spent most of her time emphasising that she has no further comment. And yet, it explained a lot, although not on the matter of huge public interest, but on how arrogant and ignorant Cheng is.

It is ludicrous for a top official to basically say she does not care about public concerns or about allaying doubt and suspicion over preferential treatment. It is a dereliction of duty for the justice chief to display such contempt for the public and so little understanding of the need to be open and willing to provide the public with an explanation, in order to protect public confidence in due process and the rule of law. And, it is incredible that Cheng still can’t grasp what holding public office means.

And, much as she has tried to deflect the CY Leung issue by accusing people of politicising a legal matter, she attempted something similar in January: she said she hoped people would turn their attention to her department’s work and issues facing Hong Kong instead of focusing on her home. Well, the people listened and focused on her department’s work, only to be told to stop doing so. Go figure.

Many felt she did not provide sufficient explanations about her illegal structures, and many feel the same about the Leung case. Unfortunately, Cheng did not offer any apologies this time. Instead, she rolled her eyes in front of rolling cameras for all of Hong Kong to see, revealing her impatience and disgust. Again, it’s anyone’s guess why Cheng should, as a public servant, feel impatient with the public, when it’s the public that has lost patience with her.

The credibility and impartiality of her department are still on the line. She was a political liability when she failed to take care of her illegal structures before entering government. People questioned her ability to handle public duties because of the way she mishandled her private matters. So, what are we to make of her today? She still lacks political sensibility, and remains blind to how public sentiment and perception can make governance even more difficult. And, on top of her apparent inability to learn on the job, she has thrown a bad attitude into the mix.

Alice Wu is a political consultant and a former associate director of the Asia Pacific Media Network at UCLA