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"Everyone is working towards what will be a fantastic Tokyo games. In the unlikely event that it is required, London, as it has done throughout history, will do its best to step up to the plate."

"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.

"Despite our recent process, we still have a huge gap with other advanced countries. Therefore our generation has the huge responsibility of combining our research with national needs and overcoming obstacles."

"Eleven out of 18 companies in the electronics sector we talked to said they are hardly affected by the current trade volatilities. Companies like drone-maker DJI have alternative plans in research and development, making them de facto immune to the levies," Gao said.

"Development is like riding a bike: you cannot stand still because you will fall," Yang Shaolin, managing director of the World Bank, said at the same forum on Friday. "Continued reforms are needed."