Zeng said the measures include rigorously implementing eco-friendly construction standards, refurbishing old buildings to improve energy efficiency, enhancing studies on eco-friendly technology, equipment and materials which will become preferred options in construction projects, and improving the legal system to facilitate energy saving.

"To construct buildings in an energy-efficient, eco-friendly and intelligent way is an international aim for sustainable development. It is also a key task for China in its economic and social development," Zeng said at the Second International Conference on Intelligent Eco-friendly and Energy Efficient Building.