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Since the founding of the People's Republic of China 70 years ago, the speed of trains has increased sixfold while the length of the entire railway system has expanded from only slightly more than 20,000 km in 1949 to some 131,000 km by the end of 2018.
The public widely participated in the recommendations.
"China always respects the sovereignty of all countries, and does not interfere in the internal affairs of other countries," the spokesperson said in a statement.
Chinese and American people have fond sentiments towards each other, Zhang said.
The research shows that a network of satellites could one day form the infrastructure of a quantum internet.
