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The trading halt came after the price of US crude oil futures collapsed on Monday with the US benchmark West Texas Intermediate for May delivery falling below zero for the first time in history and settling at -.63 a barrel.

The total supply of flu vaccines this year is more than twice the amount of flu vaccines used last year during the winter and spring, the flu season in most parts of China, said Wang Bin, deputy director of the National Health Commission's Disease Control and Prevention Department, at a news conference on Thursday.

The timing of the report's release is not necessarily political, but the Pentagon's assessment of Chinese military achievements will likely raise alarm bells in Washington and probably be picked up on the US presidential campaign trail, according to Jon Taylor, chair of the department of political science and geography at the University of Texas at San Antonio.

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The theme of the meeting, sponsored by the Chongqing Municipal People's Government and the SCO Secretariat, was "Upholding Openness and Inclusiveness for New Opportunities of the SCO Regional Cooperation".

The total trading volume for eight listed gold futures contracts on the exchange was 405,783 lots, with a turnover of about 175.03 billion yuan.

The top legislature's decision to extend Hong Kong lawmakers' terms is the best solution to address the city's legislative vacuum caused by the election postponement, and various sectors of Hong Kong society agree with the move.

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The tech-focused board will continue to be a key driver in improving the functioning of China's A-share market, analysts said.

The theme of this year's expo is "Jointly building the 21st Century Maritime Silk Road and the China-ASEAN community of innovation." Cambodia is this year's country of honor.

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The three companies have developed an architecture that could be used by other automakers and mobility companies.

The top two films were also box office hits in overseas movie markets.