Sandstorms sweep into Beijing

Beijing: Tiananmen Square is seen amid the sandstorm that has plagued north-west China for the past few weeks Photograph: Grace Liang/Reuters Photograph: Grace Liang/guardian.co.uk Beijing: A man carries a baby wrapped up against the storm Photograph: Liu Jin/AFP Photograph: Liu Jin/guardian.co.uk Beijing: A man cycles through the sandstorm Photograph: Peter Parks/AFP Photograph: Peter Parks/guardian.co.uk Beijing: A woman wraps her head in a scarf to block the sand Photograph: How Hwee Young/EPA Photograph: How Hwee Young/guardian.co.uk Beijing: People walk through the sandstorm in Tiananmen Square Photograph: Liu Jin/AFP Photograph: Liu Jin/guardian.co.uk Tianjin: A woman covers her face against the sand Photograph: Vincent Du/Reuters Photograph: Vincent Du/guardian.co.uk Beijing: Tiananmen Square Photograph: Liu Jin/AFP Photograph: Liu Jin/guardian.co.uk Lanzhou: A woman walks through the standstorm Photograph: Nie Jianjiang/AP Photograph: Nie Jianjiang/guardian.co.uk Beijing: A paramilitary policeman stands guard on Tiananmen Gate Photograph: Grace Liang/REUTERS Photograph: Grace Liang/guardian.co.uk