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"Our bilateral relations have stood the test of changing international circumstances and set an example of solidarity and cooperation for common development between the two emerging economies and developing countries," he said.

He added that Samoa is willing to advance major cooperation projects with China under the BRI.

While achieving its own development, China will make greater contributions to helping countries around the world realize shared prosperity, Xi said.

Atomic clocks are the most accurate time and frequency standards. They use vibrations of atoms to measure time. An accurate and ultra-stable set of atomic clocks is essential for global navigation satellite systems.

Market-based operation of state-owned scientific research instrument and equipment will be promoted. Mechanisms will be established to allow for innovation-related decision-making on a trial-and-error basis.