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Chen Ruimei tap, tap, taps a nail with pinpoint accuracy into one of the many porous holes that make the surface of a volcanic rock about the size of my own head. The nail skewers a sprig of dendrobium-a type of orchid which has many commercial uses from tea, traditional Chinese medicine and even wine.

Children admire automatons at the opening of the World Robot Conference in Beijing's Daxing district on Tuesday. The event, themed "Intelligent ecosystem for a new open era", runs through Sunday. [Photo by Wang Jing/China Daily]

Chen Zhaoxiong, vice-minister of industry and information technology, said more efforts would be made to promote the maturity of 5G technologies and create a complete industrial chain, in the hope of laying a sound foundation for comprehensive commercial use of the superfast technology.

Cheng Hong, a vice-mayor of Beijing, said the policy will extend the visa-free time for travelers from some countries who want to visit the three areas. Currently, the maximum stay in Beijing and Tianjin is 72 hours.

Chen Tao, an analyst at the Beijing-based consultancy Analysys, said as consumers pay more attention to the quality and value of products sold on the e-commerce platform, Liu's incident will not have a direct influence on the daily operation of the company.