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An English teacher in the US interacts with a Chinese kid in Beijing during an e-class of the VIPKid, a Chinese online education platform. [Photo provided to China Daily]

An official from the embassy said that they are trying to learn more details about the incident as well as about the abducted people, adding that they have urged Pakistan to rescue the abductees as quickly as possible.

An "angle of attack" sensor built into the planes measures the amount of lift generated by the wings. The device warns pilots when there is too little lift, potentially stalling the plane, then points the nose of the plane down to gain speed.

An Jun, another Shenzhen resident, said, "Although the service offers an opportunity for pet lovers, we should not build our happiness on animals' misery."

An Amazon spokesperson declined to comment for this story but pointed to the company’s sustainability initiatives.