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Chen said high-tech industries, including in the information sector, biomedicine and new-energy cars, have been introduced to help improve its industrial structure.

Chief Justice John Roberts said that Trump's administration "has set forth a sufficient national security justification" to prevail. "We express no view on the soundness of the policy," Roberts added.

Chen Hua, founder and CEO of the company, said: "People are more willing to use mobile karaoke application during the epidemic, and our user growth rates, retention rates and activity levels surged dramatically."

Chen Li, an analyst from Chuancai Securities, said Chinese electronics and information companies have made full use of their technological prowess to fight the epidemic, and provided strong tech support to ensure social stability. He added the epidemic will help accelerate the application of cloud computing, big data and AI in more scenarios to some extent.

Chen first began producing fish rubbings in 2001, becoming more and more passionate about his hobby as the years passed, seeking out rare fish to add to his collection at every opportunity.