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Cui Tiankai, the Chinese ambassador to the US, said the trade imbalance is "a structural problem" rather than something "caused by somebody's policy".

Cui Dongshu, secretary-general of the association, said thanks to the extension of subsidies, production this year is estimated to surge 23 percent from 2019 to 1.6 million units. Cui, however, did not offer an estimate of the sales for this year.

Cybersecurity remains a major problem for China as electronic attacks are frequent worldwide and with no end in sight, according to a leading specialist on internet security.

Cryptography, different from passwords widely used when internet users register for services online, refers to products, services or technologies that are given encrypted protection or security authentication by a special transformation of data.

Currently, a WHO team of international experts are in China working with their Chinese counterparts to better understand those gaps and improve the understanding of the outbreak, Tedros said.