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China has a four-level emergency response mechanism to deal with droughts and floods, with the first-level to deal with the most serious cases and the fourth-level to prepare for the least serious cases.

China has made great strides in the use of plasma therapy to treat coronavirus patients. In March, Yang Huichuan, vice-president of the China National Biotec Group (CNBG), a subsidiary of China National Pharmaceutical Group (Sinopharm), went to Italy to administer convalescent plasma therapy on the sick.

China has been Russia's largest trading partner, and fruitful results have been achieved in cooperation in energy, aviation, science and technology, and other areas, Putin said.

China has become Canada's largest source of international students, second-largest trading partner, third-largest tourism market and sixth-largest source of foreign direct investment.

China has lodged solemn representations to Germany, Hua said at a daily news conference.