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"China firmly opposes any attempt to weaken the WHO, whose role is indispensable at this crucial stage," Zhang wrote, stressing that blame-shifting will not help focus on responding to the pandemic, but only divides the international community and jeopardizes international anti-epidemic cooperation.

"China is ready to work with the international community and continue its contribution to peace, stability and development in Afghanistan," Zhang said.

"China has controlled the epidemic well. This is a hard-won achievement that we must safeguard," said Du.

"China has done its best, from sharing information on the virus and the disease to providing medical resources to foreign countries, and now it is committed to developing vaccines as a global public product, with actual action," Shi said.

"China has offered a good business environment and governmental support for the company in the past two decades, which accelerates the development of our manufacturing base to serve both the Chinese and Asian markets," Chen said.