The five people, aged between 15 and 18, were arrested on Friday for murder, taking part in a riot and wounding, the police said in a statement Saturday.
The findings raise concern that humoral immunity against SARS-CoV-2 may not be long lasting in persons with mild illness, who compose the majority of persons with COVID-19, said the study.
The fire started in an imported paper warehouse in Binhai New Area, Tianjin Municipality. No casualties have been reported so far.
The first batch of Chinese medical aid to Egypt was delivered in mid-April, which consisted of 20,000 N95 face masks, 10,000 protective suits and 10,000 testing kits for COVID-19.
The findings suggest US companies remain committed to the China market over the long term, despite years of trade friction and ever-rising calls for economic decoupling by political hawks.
The firm said earlier that it is already producing entire vehicles on a trial basis ahead of schedule - from body and paint to general assembly - which are about 65 percent cheaper to build than at the Model 3 production facility in the US.
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The former head of the agency, Brigham McCown, called the series of gas explosions "unprecedented, at least in recent memory."
The first foreign sportsman to get a Chinese "green card", or permanent residence permit, former NBA star Stephon Marbury will soon see his story to hit the country's big screen.
The first Northeast Asia Cross-border E-commerce Summit, and the first Made in China 2025 Forum in Jilin are also slated to take place during the expo.
The first three installments of the Transformers franchise experienced massive success in the Chinese mainland. The 2007 original grossed million, the 2009 sequel raked in million, and the third film in 2011 took in 2 million. The fourth release in 2014 became the highest grossing movie in China at the time (now sixth) by hauling in 7 million.