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"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.

"Economic and trade uncertainty, digital transformation and the impact of climate change are all challenges of our time, which will have a significant influence not only on what standards we develop but how we develop them," Walter said.

"Despite the current challenges, China's pig breeding industry is heading toward a more intensive, environmental-friendly and risk-resistant growth model," said Feng, an analyst with soozhu.com.

"Empty-nest" just a label

"Despite trade tensions with the United States, China hopes to send the message that the nation will stick to efforts to facilitate globalization," said Xia Qing, an official with the National Development and Reform Commission, on Wednesday.