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"GM technology can be safely controlled, judging from scientific principles and practices over past decades," he said.

"Governments around the world, particularly China, the United States, and UK, have taken unprecedented steps to legislate against the ivory trade," he said. "But, as the ivory market is closing down in some countries, it is being displaced elsewhere."

"For some exporters, the design, technology and patterns of some exported products belong to their foreign clients," Gao said. "And thus it would require authorization to sell them domestically."

"For the physical store chains, they have been unable to keep up with the growth of online retail. For the online operators, they have struggled to keep delivery infrastructure capacity up with the rapid growth in online shopping demand," he said.

"For me, it's a good way to practice with a smartphone during home quarantine. Video games on my smartphone make fitness no longer boring. I often share fitness videos with my friends these days," Liu says.