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

"China has always been a builder of world peace, a contributor to global development and an upholder of international order. The growth of Chinese military also means the growth of the world peacekeeping force," he said.

"But merely lowering the contributions is not enough from the longer term perspective. We should speed up the reform and the integration of social insurance systems," Dong said.

"But the real work would have to be done bilaterally between Washington and Pyongyang," he added.

"By integrating high-quality domestic and international medical resources, Shanghai has formed a prototype of international-standard modern medical service industry, and the space for future growth is huge," he said.