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"Every market has its own features, so it is almost a one-size-for-one approach," Yang said.

"Even if the old regulation were in place, it is not legally binding," he said.

"Expos like the one held in Changsha are primarily mechanisms for both sides to set to know each other's practices, habits, needs, expectations and find ways to work together," Greeven said. "It's going to take a while to know each other better. And both sides need to build up an understanding of each other and find ways to do business together."

"During the epidemic, our employees work from home and communicate with the railway and customs departments to organize the supply of goods and ensure the normal operation of the China-Europe freight trains," said Ye.

"Despite our differences on policy and politics, I respect Senator John McCain's service to our country and, in his honor, have signed a proclamation to fly the flag of the United States at half-staff until the day of his interment," Trump said.