Pedestrians watch videos with the Wi-Fi provided by the street sign. (CNS/Han Zhangyun)

A pedestrian surfs the Internet with the free Wi-Fi while he charges his phone. (CNS/Han Zhangyun)

Four mutifunctional street signs have been set up at an intersection in Zhengzhou, a city in Henan province. The signs are equipped with functions like real-time monitoring, electric bicycle charging stations, air purification, free Wi-Fi and more. They also can call the police or find a cab. Because of the relatively fast Internet, many pedestrians stop to use the Wi-Fi.