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The BDS-3 system is the first space infrastructure China has provided for global public service.

The summit, which aims to make new commitments to tackling climate change and delivering on the Paris Agreement, was co-convened by the United Nations, the United Kingdom and France, and in partnership with Chile and Italy.

-- Adhering to Constitution-based governance.

Xi urged upholding Party leadership on law-based governance, saying that Party leadership is the fundamental guarantee for ensuring that governance in China is law-based and calling for promoting law-based governance to guarantee the effective implementation of the Party's line, principles and policies.

Hao Qingshui, Party chief of the village, squats in a field as he picks up a crab. "Raising crabs in the paddy fields not only boosts our village's crop yield, but also safeguards a good environment for the crabs. Such symbiosis in nature is the door to our wealth," he said.