JCDecaux China took part in the promotion of the initiative of turning off the lights at the first instance, and became the first enterprise supporting Earth Hour in China last year. In 2010, JCDecaux China continued to take part in the promotion of this activity. Starting 8 March, 250 buses under JCDecaux China's bus network media have simultaneously uploaded the publicity visual of Earth Hour in Shanghai.After the initial promotional campaign of the bus media, Beijing Metro Line 4 operated by JCDecaux and Tianjin Metro have also joined in successively to participate in the publicity and promotion of the “turning off the lights” initiative.