BEIJING, July 5 (Xinhua) -- The world in the past 24hrs. A selection of the best daily press photos from Xinhua.

Zhang Xin holds inactivated samples for nucleic acid tests at a lab of China-Japan Friendship Hospital in Beijing, capital of China, July 3, 2020.

Yan Keqin and Zhang Xin, medical workers from different departments of China-Japan Friendship Hospital, now work on a temporary laboratory team to help carry out COVID-19 nucleic acid tests at the hospital. Their daily tasks include sample collection, sample disposal, virus inactivation and information input. (Xinhua/Zhang Yuwei)

A man walks inside the Oculus station in New York, the United States, July 4, 2020. The number of COVID-19 cases in the United States topped 2.8 million on Saturday, reaching 2,808,003 as of 10:33 a.m. (1433 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Xinhua/Wang Ying)

An artist is seen with his artworks at Green Path, a hub of open-air art shows, in Colombo, capital of Sri Lanka, July 4, 2020. (Xinhua/Tang Lu)

A man shows desert locusts he caught in Sanaa, Yemen, July 3, 2020. Desert locusts swarmed through the Yemeni Houthi-held capital Sanaa on Friday, invading crops and leaving farmers of the war-torn country in despair. (Photo by Mohammed Mohammed/Xinhua)

Staff members conduct disinfection at Lugou Bridge in Beijing, capital of China, July 4, 2020. (Xinhua/Li Xin)

Aerial photo taken on July 4, 2020 shows the South Gelaqiu Mountain Celestial Pond in Heihe, northeast China's Heilongjiang Province. (Xinhua/Xie Jianfei)

A satellite, the second of the Shiyan-6 series, is launched by a Long March-2D carrier rocket at the Jiuquan Satellite Launch Center in northwest China, July 5, 2020. China successfully sent a satellite for space environment study and related technology experiments into the planned orbit from the Jiuquan Satellite Launch Center in northwest China on Sunday. (Photo by Shan Biao/Xinhua)

Dong Hanlin (C) of Shanghai vies with Guo Kai (R) of Guangzhou during a match between Guangzhou Loong Lions and Shanghai Sharks at the 2019-2020 Chinese Basketball Association (CBA) league in Qingdao, east China's Shandong Province, July 4, 2020. (Xinhua/Li Ziheng)

Police stand guard at the site of a blast in Somali capital Mogadishu on July 4, 2020.

At least seven people have been injured following a huge blast in the Somali capital here early Saturday, a medical charity said. (Photo by Hassan Bashi/Xinhua)

A man jogs by the closed entrance to Santa Monica beach in Los Angeles County, the United States, July 4, 2020. (Xinhua)