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The conference was organized by China and the WHO, and is being held in Shanghai from November 21 to 24.

Former German Chancellor Gerhard Schroeder said in his opening speech that China was of special importance to Germany as well as to the whole of Europe, adding that China and Germany had built a very successful partnership in the last four decades.

Russia, which has been under great pressure due to Western sanctions, is facing an economic transformation that needs to be promoted by a industrial upgrading.

With the heavy-lift carrier rocket, China can build a permanent manned space station and explore the moon and Mars.

In 2015, on Correa's second China visit, he and Xi agreed to elevate the bilateral ties to the level of strategic partnership, only one year before the upgrade to the latest level.