Do you know the phone number 12345?It's a public service hotline. Whether you are studying, working or travelling in China, feel free to call this phone number if you are in need of help. The hotline center is available 24 hours a day, seven days a week. It also offers multi-lingual services. Today, some foreigners come to the hotline's operation center in Beijing to experience how it is functioning. Follow them to find out!