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`-` A smart city is a city that uses information and communication technologies to enhance the quality of life, efficiency of urban services, and sustainability of the environment. First of all, smart cities can use sensors, cameras, and data analytics to monitor and prevent crime, detect and respond to emergencies, and improve traffic management.Secondly, smart cities can provide platforms and channels for citizens to access information, voice their opinions, and collaborate with the government and other stakeholders. Last but not least, smart cities can optimize energy consumption, reduce waste generation, and promote green mobility and renewable energy sources.