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"We regret the aforementioned U.S. decision," Zhao told a routine press briefing. "As far as I know, the Civil Aviation Administration of China (CAAC) is making stern representations with the U.S. side."

Phased results have been achieved in vaccine development, the meeting noted, calling for advancing clinical trials in line with the law and regulations to strive for breakthroughs as soon as possible.

"We are so happy that during this process we were able to be of help," she said.

BEIJING, May 30 (Xinhua) -- It is compulsory for motorcyclists to use helmets and motorists to wear seat belts from June 1, according to China's Ministry of Public Security.

The Wednesday meeting adopted measures to better regulate the fees charged by industry bodies and associations, and specified instances where the unauthorized levy of fees is prohibited.