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Delta said sales of most of its Sino-US flights have remained stable.
Despite mounting criticism online, Zhang Yu said he has subjected his son Wangwang to intense physical training for the past year with no major problems.
Denmark would like to make joint efforts with China to tap the potential of cooperation in areas including medicine, food, education, culture, tourism and soccer, he said.
Describing Zhang's life as excellent, he said: "Yingying was far more than just an international scholar. She was a devoted and loving daughter... She was the hope of her family."
Demonstrators shout slogans during a protest against a new citizenship law, outside Jamia Millia Islamia university in New Delhi, India, Dec 16, 2019. [Photo/Agencies]
