这是位于北京的中央电视塔熄灯前（左图）和熄灯后（右图）的拼版照片（新华社记者 陶希夷 摄）。

The combined photo shows the China Central Television Tower before (above) and after tuning off lights during the Earth Hour campaign in Beijing, capital of China, March 25, 2017. (Xinhua/Tao Xiyi)