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Recognizing China's leadership role and adept policy skills when the recent global crisis hit, visiting chief of International Monetary Fund (IMF) Christine Lagarde said that the world's economic situation might have been more "calamitous" had it not been for the impetus that China provided to growth and stability.

Yu Menglun, also academician of the Chinese Academy of Sciences, said in a recent interview that China has sought to develop non-toxic, low-cost, highly reliable, adaptable and safe carrier rockets in its research of the new generation products.

China's National Disaster Reduction Committee and the Civil Affairs Ministry raised the level of emergency response from level 4 to level 3 on Friday afternoon.

During his visit to local enterprises, Li called on entrepreneurs and workers to promote independent innovation and increase the investment in the scientific and technological research and development.

To build a new type of relation between China and the United States, the president also called on the two sides to act in a spirit of equality and mutual understanding.