Within mere days of the announcement that ground had been broken on China's super-tall Sky City skyscraper, local media is reporting that workers have downed tools.

According to Phys Org, the Xiaoxiang Morning Post reports that authorities have ordered work to cease because approval for work to commence is yet to be granted. However, air conditioning-turned-rapid construction specialists Broad Group told AFP that it had obtained all the necessary permits.

With ground works complete, construction of the tower was originally slated to take 90 days, though Broad Group appears to have revised this figure down to 4 months.

The short construction window has raised health and safety concerns, and is reportedly the cause of previous delays to the commencement of the project. Work was originally due to commence in November 2012.

Such rapid construction is made possible by Broad Group's pioneering prefab techniques which have seen a 15-story hotel built in a week and a six-story pavilion built in a day.

Source: Phys Org