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An Baijie contributed to this story.
An expert walks past a sign on experimental farmland near the China-Kazakhstan border. Ren Qi / China Daily
An example is the ever-changing "painting" by Polish artist Agnieszka Kurant, who called it "the portrait of social energy".
An employee explains the benefits of hydrogen-powered buses to the general public in Guangzhou, Guangdong province in May. HE YUSHUAI/FOR CHINA DAILY
An estimated 450,000 daily waterway passenger trips are expected to be made during the May Day holiday, about 50 percent of the number made during the holiday in 2019. Daily air passenger numbers are estimated to hit 580,000, about 33.2 percent of that for the same period last year.