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"Corn yields, for example, can drop by 1.5 to 3 metric tons if the straw is smashed and returned to the field," he said.

"Combining gaming and competitive sports, esports will become a key driving force to empower the traditional industries," Xiao of the Perfect World said. "Buoyed by the booming esports sector, we will access richer content including esports variety shows, movies and music."

"Cross-border yuan settlements will not only lower the risks from currency rate fluctuations, but also lower exchange costs for various currencies and improve trading efficiency," said Wang.

"Chinese students are a tremendous resource for American research and innovation. They bring a diverse perspective and unique background when collaborating with domestic students and colleagues," said Peter Leroe-Mu?oz, general counsel and vice-president of tech and innovation policy at the Silicon Valley Leadership Group, whose organization represents nearly 400 Silicon Valley's companies.

"China supports the DPRK in developing its economy and improving its people's livelihood, and supports Chairman Kim in leading the Party and the people of DPRK to take a development path suitable to its own national situation," Xi said.