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On behalf of the Chinese government and the Chinese people, Xi extended a warm welcome to foreign leaders and other guests.

The careful use of gene editing technology is a matter that concerns the health and long-term well-being of mankind, the statement said, adding that China has released moral code and clinical research regulations regarding research and application of stem cells technology in 2003 and 2015, respectively.

After the talks, Zhao Kezhi and Asaduzzaman Khan witnessed the signing of relevant cooperation documents.

"China will, as always, support the amelioration of inter-Korean relations and facilitate reconciliation and cooperation between the two sides," Xi said.

For Jens Meier, CEO of the Hamburg Port Authority, the Belt and Road initiative means more than just infrastructure building.