Participants pose for a photo before setting out on a bicycle ride at the JW Marriott Hotel Beijing Central on March 25 to mark the 2017 Earth Hour. The event was organized by the Marriott hotels in Beijing and bike-sharing company ofo. At night, 15 participating Marriott hotels in Beijing and Tianjin turned off non-essential lighting and lit candles in restaurants for an hour starting at 8:30 pm. These hotels also offered ofo and public transport users 40 percent off on dinner that day. [Photo provided to chinadaily.com.cn]