On Dec 14, 2007, the National Development and Reform Commission issued a notice for sanctioning Wuhan city cluster and Chang-Zhu-Tan city cluster as the National Comprehensive Supporting Reform Pilot Areas to build a resource conserving and environment friendly society.
Proposal and Conception In 1992, the United Nations Conference on Environment and Development in Rio de Janeiro adopted Agenda 21, which officially put forward the idea of "Environmental Friendliness". In 2004, the White Paper on Environmental Protection of Japan proposed establishing an environment-friendly society.
On Dec 12, 2011, the Changsha-Zhuzhou-Xiangtan (CZT) City Cluster in Hunan province won the 2011 energy-saving and new energy auto leader award for its highest development scale index and government support index.
On Dec 14, 2011, the experience exchange and training session on Japan's energy conservation ended in Changsha, Hunan province. Japanese experts gave lectures at the session and over 300 concerned people attended the session.
On Dec 24, 2011, the Standing Committee of the CPC Changsha Municipal Committee released a report stating that their efforts on alleviating river pollution have produced marked effects. There are now 15,000 desilted pools across the city.
