Wuxi, now home to 2,000-plus IoT companies, saw an output value of more than 243 billion yuan (.5 billion) in 2017, accounting for 25 percent of the national total,official data shows.
Wu said there will be a need for more professionals in the industry, and China will continue to increase its spending to combat internet crimes and attacks.
Xi made the comments while he visited Zhangjiakou, the co-host with Beijing of the 2022 Winter Olympics.
Xi also said that China would like to enhance cooperation with Fiji in such areas as trade, investment, agricultural technology and green development.
Wu, 61, is director of the national key laboratory of plant physiology and biochemistry, and director of the academic committee of China Agricultural University. He is also an academician of the Chinese Academy of Sciences (CAS).
Xi was the star at the 2017 WEF when the world was haunted by the anti-globalization sentiment, in particular Brexit - Britain's departure from the European Union - and Trump's America First policy. The fact that Xi's words are still quoted often at this year's Davos shows people's deep concerns over Trump's policies.
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Xi made the remarks while delivering a speech at a meeting of the Standing Committee of the Political Bureau of the CPC Central Committee.
Xi said China attaches great importance to its ties with the six countries and would like to further consolidate friendship, enhance mutual trust, promote pragmatic cooperation, deepen people-to-people exchanges and cooperate more in international affairs.
Xi's visit to Manchester in 2015 was an attempt to cement the relationship between China and the Northern Powerhouse, a project to create an economic area in northern England that could rival London.
Xi said as socialism with Chinese characteristics has entered a new era, the building of the national defense and the military has also opened a new chapter. He said the military should make all-out efforts to become a world-class force by 2050 and to strive for the realization of the great rejuvenation of the Chinese nation.