A paper box building stands in the square of Fujian University of Technology on May 10,2011. The building was made by ten engineering major students of the university during a "Low Emission, Green Living" campaign.

The campaign, initiated by the Architecture Department of Fujian University of Technology, encourages students to use creativity to design and build a green building within 24 hours. Competitors had to live inside their buildings for one night.

The competition attracted over two hundred entries from students, and 22 pieces of work, with the shape of a star, football, and pyramid finally staged in the grounds.[Photo/CFP]