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Before his weeklong trip to five nations in Latin America and the Caribbean, Tillerson warned the region's economies against excessive reliance on economic ties with China.

Beijing will punish such behaviors as not wearing masks when being sick with the flu or not covering one’s mouth and nose when coughing or sneezing in public spaces or eating on the subway. Such behaviors will be treated as uncivilized ones subject to penalties under a new regulation passed by the capital's top legislative body on Friday.

Before being cut and polished to what may cost over ,000 per carat -- one-fifth of a gram, or the weight of two grains of rice, diamonds have traditionally been mined from earth where they were forged in extreme pressure and heat over millennia.

Beijing Orion Star is also wading into voice recognition. It has used its technology on smart loudspeaker boxes developed by phone maker Xiaomi.

Before building a booth, an exhibitor's plan including materials for construction has to be evaluated with the green standard.