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By implementing the system, China aims to maintain the primitiveness and integrity of natural ecology, protect biodiversity and ecological security, and preserve precious natural assets for future generations, he said.

CHANGCHUN, Aug. 24 (Xinhua) -- Chinese Vice Premier Hu Chunhua has stressed the protection of black earth in the country's northeastern regions.

During the tour, Li visited a historical site where late Chinese leader Mao Zedong and other past revolutionaries had studied, worked and engaged in revolutionary activities.

BRASILIA, Sept. 18 (Xinhua) -- China and Brazil agreed to deepen comprehensive strategic partnership as senior Chinese legislator Cai Dafeng visited the Latin American country from Sunday to Wednesday at the invitation of the latter's lower house.

Provincial-level people's congresses may enact local decrees provided that they shall not contravene any provision of the Constitution, national laws or administrative regulations.