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"Cheap and abundant labor is the most often-mentioned comparative advantage of developing countries. However, this has not been the only reason for the robust development of China over the past four decades," said Fan, also chairman of the China Development Institute.

"China is a great country and has made particularly great achievements in the recent dozens of years," said Ruto. "It has been dedicated to helping other developing countries. China has become the largest investor in Kenya."

"China is paying a lot of attention to general aviation by increasing the number of airports. The nation is still a young market for helicopters. When the infrastructure is fully developed, the growth rate will be even higher. I'm very confident, and it's just a matter of time," he said.

"China is also willing to strengthen exchanges and cooperation with South Sudan in disaster prevention and mitigation, so as to reduce the loss of people's lives and property caused by natural disasters," the Chinese envoy added.

"China is of great significance for the group, and we have great confidence in the growth potential of the Chinese market," said Yang Wenlei, chief executive officer of Olympus China.