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An effective way to promote connectivity in the Bay Area is to construct a fully automated and intelligent intercity subway, said Liu, who is also a member of the National Committee of the Chinese People's Political Consultative Conference.

An initial investigation showed the explosion was caused by a ruptured pipe at the refinery. The petrochemical company had restarted its refining equipment early on Monday morning after annual maintenance when the blast happened, according to the firm.

An Amazon spokesperson said Monday that “events like Prime Day have become an opportunity for our critics, including unions, to raise awareness for their cause, in this case, increased membership dues. Both Clark and the spokesperson noted the minimum wage and other benefits the company offers.

Among them, special bonds have been issued targeting fields related to epidemic containment and economic development, the newspaper said.

An expert panel including scholars from Peking University, Hubei Provincial Museum and other institutions studied the artifacts following their return, concluding they "filled a void in historical studies".