Update | We do have permission to build Changsha skyscraper, says developer
Xinhua says no approval for world's tallest building; developer disagrees

The company seeking to build a record-breaking "prefab" skyscraper in Changsha insisted the project was proceeding as planned, despite mainland media reports that it lacked necessary approvals.
Broad Group spokeswoman Zhu Linfang disputed a Xinhua report that the company's plan to build the world's tallest building in just seven months had not received approval from Hunan's Department of Housing and Urban-Rural Development.
The Xinhua report noted that no work was taking place at the site of the 838-metre Sky City following a ground-breaking ceremony on Saturday, raising doubts about whether the project could be completed by April.
Video: Advertisement for Changsha's Sky City
"We have obtained all necessary government approval as the project progressed from one stage to another. Everything we do is legal and approved by the government," Zhu said, adding that the company expected the state news agency to "correct its mistake".