Passengers are seen at the waiting hall of Xi'an Railway Station in Xi'an, Northwest China's Shaanxi Province, May 1, 2026. The transportation network of the country witnessed a travel peak on the first day of the May Day holiday. (Photo: Xinhua)

Hats are seen hanging on the walls in an alley in Chefchaouen, Morocco, April 30, 2026. Chefchaouen, known as the "blue city" for its colored walls and alleys, is a tourist destination in northern Morocco. (Photo: Xinhua)

An aerial drone photo shows buffaloes arriving at an islet in search of food after crossing the Jialing River at a scenic spot in Peng'an County, Southwest China's Sichuan Province, April 30, 2026. (Photo: Xinhua)

Fireworks explode during the closing ceremony of the 6th Asian Beach Games in Sanya, South China's Hainan Province, April 30, 2026. (Photo: Xinhua)

People attend the traditional International Workers' Day march, in Lille, France on May 1, 2026. (Photo: Xinhua)

An aerial drone photo taken on April 30, 2026 shows a view of the Qiyun Mountain scenic area after rain in Xiuning County of Huangshan City, East China's Anhui Province. (Photo: Xinhua)

Rescuers work at the train accident site in Bekasi, Indonesia, April 27, 2026. A commuter train on the Jakarta-Bekasi route collided with a long-distance train operating on the Jakarta-Surabaya route at around 8:50 pm local time on Monday. (Photo: Xinhua)

Participants of the Global Mayors Dialogue event visit the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, Northwest China's Shaanxi Province, April 29, 2026. (Photo: Xinhua)

Gas prices above $6 per gallon are displayed at a Chevron station in Monterey Park, California, on April 30, 2026. (Photo: AFP)

Fireworks light up the sky during the grand finale of the Malta International Fireworks Festival at the Grand Harbour, Valletta, Malta, April 30, 2026. (Photo: Xinhua)