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"Even if mobile phones are banned, if a teacher simply reads from the textbooks, students will still struggle to concentrate. The main factor in retaining students' attention is the quality of teaching," he said.

"Despite the high cost of offshore wind farms in China, which is twice or three times that of a plant with the same capacity on land, we believe the cost would come down in the next few years, becoming comparable with solar and onshore wind facilities," said Joseph Jacobelli, an independent energy analyst and Asia-Pacific CEO of clean energy producer Joule Power.

"Either China is going to write the rules on 21st century trade or we are," Biden said.

"Each qipao is a one-of-a-kind product," Zhang said.

"Few will deny that Chinese currency is set to become a more important player on the world stage, particularly through the lens of China's Belt and Road Initiative," she continued.