Tourists visit Beijing International Horticultural Exhibition in Yanqing District of Beijing, capital of China, on May 1, 2019. Beijing International Horticultural Exhibition welcomed its first tourist peak by serving more than 320,000 tourists during the four-day May Day holiday, the organizer said Saturday. Some 132 activities, including float parades, world ethnic and folk cultural performances, and culture and art carnivals staged by central and eastern European countries, were held during the holiday. With the theme of "Live Green, Live Better," the expo opened to the public on Monday at the foot of the Great Wall in the capital's Yanqing District and will last until Oct. 7. (Xinhua/Zhang Chenlin)