Artists perform at the Beijing Garden at the International Horticultural Exhibition 2019 Beijing in Yanqing District of Beijing, capital of China, May 1, 2019. Nearly 50 activities aimed at showcasing Beijing's achievements in ecological progress and image as a historical and cultural city will be held during the four-day May Day holiday at the Beijing International Horticultural Exhibition, local officials said. These activities also aim to showcase the development of Beijing as an international metropolis and the city's achievements in foreign exchanges. (Xinhua/Ju Huanzong)