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Besides, 10 targeted measures have been laid out to ensure implementation of steps to prevent and control myopia among schoolchildren. The measures explicitly define that teaching with electronic gadgets should be limited to no more than 30 percent of overall teaching time; parents should guide their children, especially preschoolers, to spend less time on electronic devices; children under the age of 8 should be prohibited from playing video games, and children should spend no more than one hour on electronic devices a day.

Besides Deloitte, a number of the world's top 500 enterprises and industry leaders have invested in Hainan.

Belt and Road construction has accelerated the development of participating countries, improved the livelihoods of their peoples and opened up the prospect of mutual benefits and win-win cooperation, he added.

Besides five water lily exhibitions, the garden has also organized activities where visitors can view aquatic life, learn more about science, watch 4D films and participate in photography competitions.

Biden has received four COVID-19 tests since Oct 2 and all results were negative, according to his campaign.