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Drivers in cities such as Beijing, Shanghai, Shenzhen, Guangzhou and Tianjin have to apply for the license plates.

Due to a lack of credit history and collateral, micro-and-small businesses have suffered from a credit crunch due to higher costs, bigger risks and the discrepancy between supply and demand, said Li Dongrong, president of the National Internet Finance Association of China.

Drivers who refuse to take a sobriety test will face even heavier penalties, according to the regulation.

Due to the outbreak, both the passenger and the flight volume witnessed a staggering decline since Jan 23, it said, adding that the flight volume hit rock bottom at 3,931 on Feb 13, only 23 percent of the normal volume before the pandemic.

Drugs that target this vulnerability, known as "redox drugs," can work by either disabling the antioxidant systems or further boosting production of hydrogen peroxide. But many such drugs have entered clinical trials with mixed results.