How to turn dodgy houses into a legal enterprise

The Pangu Plaza is renowned all over China, let alone in Beijing. It is said its rooftop courtyard houses are only for lease, not for sale, with rents as high as 1 million yuan per day. You can imagine their prices during the Beijing Olympics. The public has just known from the commission of urban planning that the courtyard houses couldn't be sold. But the project can now be traded legally with the administrative penalties.

Yet, four questions are left to be answered.

First of all, the Pangu Plaza would have gone through all kinds of inspection and supervision from authorities during the construction period. The plaza is right beside the iconic Bird's Nest Stadium and the illegal structure is too grand to be overlooked. Then there comes the question why the authorities have not found it out and corrected the mistake? Probably these authorities turned a blind eye to the project after granting the approval and they are to blame of course.