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"Different crops and fruit trees need different types of pesticide and fertilizer," Ran said. "The total amount of the chemicals used by the farmers was huge which severely damaged the soil and water."

"Despite their relatively late start, the companies have made strides in screening and prediction of diseases, medical imaging, case and literature analysis, new drug discovery and other functions," Wu said.

"During the past year, local game firms have found ways to survive in the rough time," Liu said. "The main solution is to expand overseas. After the nine-month licensing freeze, they will continue to spread across the globe, and more companies will target overseas markets. And that will be a driving force for the growth of the entire industry."

"Demand from jewelry, the largest consuming sector for gold, is improving, mainly from India and China," said Zhu. "Gold may yet retain its (long-term) safe haven asset status on global geopolitical and macroeconomic challenges."

"Each drone carries 20 kilograms of herbicides and can spray more than half a hectare in 10 minutes," said Gong, adding that it used to take a whole day to manually spray 1.33 hectares of farmland.