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"Digital economy's contribution to GDP (which was 82 trillion yuan) exceeded 33 percent last year," said Lu.

"Every Friday, I come to the Chinese corner, and they have presentations about different topics of China, like Chinese food, Chinese wedding habits, Chinese music and so on," he said. "The more you know about the culture, the better you understand people."

"Even though a lot of money can be made from selling trains, providing maintenance services and selling trains directly in overseas markets can also be profitable and convenient," said Feng Hao, a rail transportation researcher at the National Development and Reform Commission.

"Disputes between hospitals and patients won't be prevented if medical workers are not warm or sympathetic enough," said Ling, a doctor from Xuanwu Hospital Capital Medical University.

"Escalators are one of our core products and our escalator factory in China serves global markets. The upgraded Otis escalator factory underscores our confidence in the China market," he said, adding that the group is committed to continue meeting the needs of its customers in China, the world's largest elevator market.