Tourists ride on a ferry crossing the Huangpu River towards the Lujiazui Financial District.

The Oriental Pearl Tower (centre), stands among other buildings in the Lujiazui Financial District on the Pudong riverside.

The Oriental Pearl Tower (centre left), Shanghai World Financial Center (centre), and the Shanghai Tower (centre right), stand among other buildings in the Lujiazui Financial District on the Pudong ri...

The Oriental Pearl Tower (centre left), Shanghai World Financial Center (centre), and the Shanghai Tower (centre right), stand among other buildings in the Lujiazui Financial District on the Pudong ri...

An aerial photograph taken above Shanghai.

The Oriental Pearl Tower (centre left), Shanghai World Financial Center (centre), and the Shanghai Tower (centre right), stand among other buildings in the Lujiazui Financial District on the Pudong ri...

The Oriental Pearl Tower (centre left), Shanghai World Financial Center (centre), and the Shanghai Tower (centre right), stand among other buildings in the Lujiazui Financial District on the Pudong ri...

Tourists ride on a ferry crossing the Huangpu River towards the Lujiazui Financial District.

A view of the town of Hyesan, North Korea, seen from across the border, formed by the frozen Yalu River, in Changbai.

Tourists ride on a ferry crossing the Huangpu River towards the Lujiazui Financial District.

A soldier, stands and looks on as women wash clothes through a hole broken through the frozen surface of the Yalu River in Hyesan, North Korea, seen from across the border in Changbai.

Women, overseen by a soldier, wash clothes through a hole broken through the frozen surface of the Yalu River in Hyesan, North Korea, seen from across the border in Changbai.

A view of the town of Hyesan, North Korea, seen from across the border, formed by the frozen Yalu River, in Changbai.

A woman carries a bucket of laundry towards a hole broken through the frozen surface of the Yalu River in Hyesan, North Korea, seen from across the border in Changbai.

A woman carries a bucket of laundry towards a hole broken through the frozen surface of the Yalu River in Hyesan, North Korea, seen from across the border in Changbai.