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Cheng Bo, dean of the Suzhou Automotive Research Institute of Tsinghua University, said there is an urgent need for standards on roadside smart infrastructure regarding issues like what kind of sensors need to be installed on traffic poles, at what intervals and in what road conditions.

Cheng Yajing, a 43-year-old gardener at Beijing Botanical Garden, points to the plant that she brought from South Africa in the greenhouse. ZOU HONG/CHINA DAILY

Chen Jun, chief analyst of Beijing-based market research agency Sigmaintell Research, said South Korea and Japan are the major producers of crucial electronics components and production materials in the world. If the outbreak cannot be brought under control soon in the two countries, supply of key electronics components such as chips will be crimped and their prices will go up, he said.

Chen added that the fair attracted many foreign companies because of the city's logistics advantages and fast-developing cross-border e-commerce.

Cheung said the central government will send a team of experts to the city to help build a mobile-cabin hospital of 2,000 beds, as well as help the city buy vaccines once it is ready for purchase. It has also agreed to help the city expand its capacity in mass virus testing.