A police officer works by cordon following a stabbing incident in the Golders Green area in London, Britain, April 29, 2026. The British counter-terrorism police have declared a stabbing incident in Golders Green, a north-west London neighborhood, on Wednesday a "terrorist incident." (Photo by Stephen Chung/Xinhua)

A girl rides a camel in the ancient city of Khiva, Uzbekistan, on April 26, 2026. As one of the ancient cities situated along the Silk Road, Khiva has been a center of education, science and culture, and served as a cradle of civilizations spanning millennia, with Ichan Kala, the inner city of the ancient oasis of Khiva, added to the UNESCO World Heritage List in 1990. (Xinhua/Li Renzi)

A staff member of an intelligent robot industrial base trains a robot in Haigang District of Qinhuangdao, north China's Hebei Province, April 28, 2026. Local authorities in Haigang District has set up an innovation platform and introduced tailored policies to encourage enterprises in robot industry to increase their investment in research and development, thereby advancing the upgrade of products covering a wide range. (Xinhua/Yang Shiyao)

An aerial drone photo taken on April 27, 2026 shows farmers driving agricultural machinery to prepare the field for sowing in Jinshan Town, Fujin City, northeast China's Heilongjiang Province. (Photo by Qu Yubao/Xinhua)

Passengers are seen at a platform of Harbin Railway Station in Harbin, northeast China's Heilongjiang Province, April 29, 2026. China's railways are expected to handle 158 million passenger trips during the May Day holiday travel period -- an eight-day travel rush from April 29 to May 6, China State Railway Group Co., Ltd. said on Wednesday. (Photo by Yuan Yong/Xinhua)

This photo taken on April 29, 2026 shows a bronze lamp on display at Fuzhou Museum in Fuzhou, southeast China's Fujian Province. An exhibition themed on the main tomb of the Marquis of Haihun kicked off here on Wednesday and will run until July 30, with more than 120 relics on display. (Xinhua/Wei Peiquan)

A Tibetan antelope is pictured at the Changtang National Nature Reserve, southwest China's Xizang Autonomous Region, April 28, 2026. Located in the northern part of Xizang with an average altitude exceeding 4,500 meters, the Changtang National Nature Reserve is home to over 30 kinds of wild animals listed on China's national-level protection catalogue, including Tibetan antelopes. (Xinhua/Tenzing Nima Qadhup)

Naif Yakl (R) of Saudi Arabia competes during the beach soccer men's bronze medal match between Palestine and Saudi Arabia at the 6th Asian Beach Games in Sanya, south China's Hainan Province, April 29, 2026. (Xinhua/Yang Guanyu)