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But the sophisticated, 21-meter-long trucks that can drive from a depot onto a highway with the help of an advanced computer on board will not immediately eradicate jobs for America's 1.8 million truck drivers, people in the industry say.

By comparison, one drone can spray 200 mu each day. Moreover, precise spraying with drones can also help farmers use 20 percent less pesticides and fertilizer and increase results by 95 percent, he added.

But tensions have mounted in terms of global economic and trade relations in a year's time, which have been aggravated by the COVID-19 pandemic, said Zhao Xiaolei, director of the FTZ research institute at the Shanghai University of Finance and Economics.

But they also noted that the sector still has some bottlenecks, including slow capital flow for some foreign companies as well as the constantly changing schedule of shipping companies because they are being affected by the pandemic.

By comparison, the SARS outbreak in 2003 sickened 8,098 and killed 774, or about 9.55 percent of those infected.