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"Canada is a country made strong not in spite of our differences but because of them," Trudeau told the gathering. "We don't aspire to be a melting pot－indeed, we know true strength and resilience flows through Canadian diversity."

"China has mastered a series of key technology and developed some high-quality intellectual property. If we fail to strictly review core IP transfers related to national security, we may put the country at the risk of losing control of key technology in important fields and suffering major financial losses," said Zhang.

"Children's facial structures can be unique," said Stephen Shafer, president of 3M Greater China Area. "So our job is to make respirators to fit their faces that come in different sizes, otherwise the respirators won't work."

"China needs a high-quality modern system to follow the new 'dual-circulation' development pattern," Wang said. "More efforts should be made to expand the effective supply in the logistics market and improve the service capabilities of the transportation hubs."

"China has taken various measures to restore hog production to ensure that pork supply and market prices are basically stable. Tariff reduction is another vital policy tool," said Yang Weiyong, an economics professor at the University of International Business and Economics in Beijing.