2. E Mei Mountain

Location: Southwest China's Sichuan Province

Reason: A pioneer in advocating low-carbon travel

Energy-saving measures have been widely adopted across the scenic zone. The forests have been well-protected, with the coverage percentage of E Mei Mountain kept over 95 percent through the years. March to June is the best season to appreciate rhododendrons on the mountain, while in spring, visitors can also enjoy picking spring tea and bamboo shoots.