The concrete and steel frame of the 160,000-square-meter China Pavilion was completed today.

In the China Pavilion at Expo 2010, the organizer will mainly exhibit the country's achievements in urban development from ancient through modern times, said He Jingtang, an academic with the Chinese Academy of Engineering and the chief designer of the pavilion.

A detailed exhibition plan for the pavilion has yet to be decided, said Mao Xiaohan, who is in charge of the pavilion's blueprint.

The organizer will announce the exhibition plan in September, said Mao.

The main exhibition area of the 63-meter China Pavilion is its 30-meter-high upper part, which is divided into three stories.

Two cafes and two open-air observation decks will be set up on the roof of the pavilion, according to He.

The construction of the pavilion began on December 18, 2007, and is to be completed in May, said Yao Jianping, project manager of China Pavilion.

Workers will begin to paint the pavilion in March. Interior decoration and exhibition arrangement work will begin on September 30 and be finished before the end of 2009, Yao said.