The Chinese winner of architecture’s most prestigious award has criticised the wanton demolition that has left many of the nation’s cities fragmented and almost unrecognisable to their citizens. The comments from Wang Shu, who will on Friday receive the 2012 Pritzker prize in a ceremony in Beijing, highlight widespread complaints in China about urban planning amid a process of urbanisation that saw more than 20m rural dwellers move to cities last year alone.