Through promoting Earth Hour lights off activity to the public, JCDecaux China, the sponsor of Earth Hour event, reminds people to pay attention to the climate change, eliminate resource waste via practical action, and improve environment. 
Since the beginning of March, aiming to further publicize this event, JCDecaux China has contributed 150 buses ads space posted with Earth Hour Ads running all over Shanghai, and also on 26 light boxes covering more than 10 stations in major metro lines.