A visitor views photographic works at a photo exhibition in Today Art Museum in Beijing, capital of China, July 4, 2018. The exhibition, organized by the tourism authorities in Ali prefecture of Southwest China's Tibet autonomous region opened here on Wednesday, and will last to July 10. [Photo/Xinhua]

A visitor views photographic works at a photo exhibition in Today Art Museum in Beijing, capital of China, July 4, 2018. [Photo/Xinhua]

Visitors view photographic works at a photo exhibition in Today Art Museum in Beijing, capital of China, July 4, 2018. [Photo/Xinhua]