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"Children are born scientists, with their natural curiosity and their strong need to explore the world. And early science exploration is of great importance for them to use and develop skills, laying a foundation for future sustainable development," she added.

"China and other SCO members are also exploring ways to integrate the BRI with regional cooperation programs and national development plans," he said, adding that they also support policies and activities that help landlocked countries transform into land-linked ones, including by strengthening connectivity and cooperation in transportation and infrastructure.

"China has tested a wheeled bullet train at speeds up to 420 km per hour in operation. ... The safety index is totally fine - including the derailment coefficient, shock absorption, vertical acceleration and horizontal acceleration - leaving the vibration noise (unsolved)," He Huawu said in a China Central Television program on Sunday night.

"But the proposal does not mean that no other bands will be used for 5G. High-frequency bands will be used later to boost the internet speed," Xiang said.

"Car makers have strong capabilities in comprehensive manufacturing, with advantages in purchasing materials, production lines and output of technologies," said Cui.