BEIJING, May 18 (Xinhua) -- The world in the past 24hrs. A selection of the best daily press photos from Xinhua.
Cao Zhen, a researcher at the Institute of High Energy Physics (IHEP) under the Chinese Academy of Sciences (CAS), speaks at a press conference in Beijing, capital of China, May 17, 2021.
Chinese scientists have detected a dozen ultra-high-energy (UHE) cosmic accelerators within the Milky Way, a find that could overturn humanity's understanding of the galaxy and help reveal the origin of cosmic rays, which have puzzled scientists for a century.
The findings were based on the observations of China's Large High Altitude Air Shower Observatory (LHAASO), one of the country's key national science and technology infrastructure facilities, which is under construction in Daocheng in southwest China's Sichuan Province.
The new discoveries were published in Nature on Monday.
Scientists have also detected photons with energies exceeding 1 peta-electron volt (quadrillion electron-volts or PeV), 100 times more energy than the record high achieved by any manmade accelerator on Earth. One photon with an energy of 1.4 PeV was detected, the highest value ever observed by humans. (Xinhua/Jin Liwang)
Medical workers collect samples from residents of Xiaowanghai Village for nucleic acid tests in Bayuquan District, Yingkou City, northeast China's Liaoning Province, May 16, 2021. Northeast China's Liaoning Province reported four new confirmed locally transmitted COVID-19 cases as of 7 p.m. on Monday, the provincial health commission said. Two infections were reported in the provincial capital Shenyang, and the other two in the city of Yingkou. The province also reported three imported asymptomatic cases in Shenyang Monday. (Xinhua)
Staff members introduce policies of epidemic prevention and control at a community in Jin'an District of Lu'an City, east China's Anhui Province, May 17, 2021. The city of Lu'an has raised the COVID-19 alert levels from low-risk to medium-risk in four residential communities, the city's health commission said on Monday. The city currently has six areas classified as medium-risk. (Xinhua/Zhou Mu)
A staff member shows the speed of 5G network through a phone at the 2021 World Telecommunication and Information Society Day Conference in Zhengzhou City, central China's Henan Province on May 17, 2021. The two-day conference kicked off here on Monday with the theme "Accelerating Digital Transformation in Challenging Times". (Xinhua/Li Jianan)
Fang Guorong (R) and his son Fang Chen restore Zenghouyu bronze chime bell in Hubei Provincial Museum, Wuhan, central China's Hubei Province, May 14, 2021.
In the Culture Relics Protection Center of Hubei Provincial Museum, 62-year-old Fang Guorong and his 33-year-old son Fang Chen have been repairing Zenghouyu bronze chime bell for nearly two years. The repair work is about to be completed after a series of complicated processes.
Fang Guorong has engaged in bronze ware restoration for more than 40 years since he entered the Hubei Provincial Museum at the age of 18, and now is an expert in this field in Hubei.
Since 2009, Fang Chen has begun to learn bronze relic restoration skills from his father and received strict training. After five years of learning and practice, Fang Chen was able to restore bronze wares independently. This time, to restore the Zenghouyu bronze chime bell, Fang Chen applied advanced techniques such as 3D scanning and 3D printing technologies.
Now Fang Chen has continued his father's career and devoted himself to the restoration of bronze ware. (Xinhua/Xiao Yijiu)
Laborers work at the site of a 600,000 metric ton liquefied natural gas project in Ordos, north China's Inner Mongolia Autonomous Region, May 17, 2021.
Located in Otog Front Banner of Ordos, the main part of the 600,000 metric ton liquefied natural gas project has been completed and is expected to be put into operation this summer. (Photo by Wang Zheng/Xinhua)
A reporter watches exhibits during an exhibition on stamps featuring ancient architecture and cultural relics from the Palace Museum in Beijing, capital of China, May 17, 2021. The exhibition, co-held by the Palace Museum and China Post Group Corporation, will open to the public on Tuesday. A total of 1,732 stamps in 56 sets are on display at the exhibition, along with 25 cultural relics from the museum, including works of calligraphy art, paintings, jade ware, enamel vessels, bronze ware and porcelains. (Xinhua/Jin Liangkuai)
Giovanni Moreno (L) of Shanghai Shenhua heads the ball during a 2021 season Chinese Football Association Super League (CSL) match between Shanghai Shenhua and Changchun Yatai in Suzhou, east China's Jiangsu Province, May 17, 2021. The Tianjin Jinmen Tigers claimed their first win over Wuhan FC 2-1 in the Chinese Super League here on Monday, while Changchun Yatai edged Shanghai Shenhua 1-0. (Xinhua/Zhu Zheng)
Norwegian Permanent Representative to the United Nations Mona Juul (C) speaks to reporters with Zhang Jun (L), China's permanent representative to the UN, and Tarek Ladeb (R), Tunisia's permanent representative to the UN, after a Security Council open debate on the Israeli-Palestinian conflict at the UN headquarters in New York, May 16, 2021. (Xinhua/Xie E)
Palestinian people, who fled their homes due to Israeli air and artillery strikes, take refuge at a school in the southern Gaza Strip city of Rafah, May 17, 2021.
The Gaza Ministry of Health reported that 198 people died - including 58 children - and 1,300 injured in seven days of bombardments by Israel, ending at noon local time. Israel reported 10 people killed and hundreds more injured by Palestinian rocket attacks launched from Gaza, the UN Office for the Coordination of Humanitarian Affairs (OCHA) said.
Concentrating its report on the toll to Palestinians, the humanitarians said more than 42,000 displaced people are seeking protection in 50 schools across Gaza operated by the UN agency for Palestinian refugees known as UNRWA. (Photo by Khaled Omar/Xinhua)
People take part in a demonstration to express solidarity with the Palestinian people in downtown Amman, Jordan, on May 16, 2021. (Photo by Mohammad Abu Ghosh/Xinhua)
A medical worker inoculates a dose of COVID-19 vaccine to a woman at a drive-in vaccination site in Noida, India, on May 17, 2021. The number of confirmed COVID-19 cases in India Tuesday morning rose to 25,228,996 and the related death toll across the country stands at 278,719, India's federal health ministry said. (Xinhua/Partha Sarkar)■
