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"China demonstrated its independent pursuit of mastering key technologies in large passenger aircraft manufacturing," he said. "It has also created valuable opportunities in global aviation."

"By connecting to the world and continuously optimizing the business environment in recent years, Shandong has created favorable conditions for the development of enterprises and promoted investment in high value-added industries," he said.

"China is willing to share with the Central and Eastern European countries, whose energy consumption is still dominated by oil and gas and is largely dependent on imports," Xu said.

"China has tried its best to practice restraint. It has been asking through diplomatic channels for the Indian troops to withdraw. But India doesn't seem to understand," Lan said, adding that there are "various possibilities" if India keeps ignoring China's diplomatic efforts.

"But now our challenge is to make correct decisions for future competition, but you never know what your decisions made today may mean three or five years later," he said.