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"Guangzhou is at the right timing to develop IAB," said Wang Xiaodong, co-founder of BeiGene and a foreign academician of the China Academy of Sciences.

"For instance, I am impressed by how an app like Didi is seamlessly integrated with WeChat and makes travel in China so easy," he said.

"From now on, we expect trading relationships to be fair and to be reciprocal," he told the joint session of the US Congress. "And we will protect American workers and American intellectual property, through strong enforcement of our trade rules."

"For the children, it was a joy to see people from another country, but for me, it was to see kids who mean the world to me," says Neha Jasmine Rodrigues, one of the volunteer students from the University of Huddersfield who visited the primary school in May.

"For example, our senior middle school Chinese teaching team has selected 22 teachers this semester to be involved in the recording. A group of teaching researchers from the city and district levels are also involved in helping prepare, record, and check the lessons."