You are talking about the earthquake quick report APP, in fact, the reason is also simple, the collection of cell phone vibration data after the stationary, when the earthquake occurs, the same area of the phone will be vibrating at the same frequency, a push will be able to capture this vibration information, basically can be concluded as an earthquake, earthquakes are the vertical wave first, if the use of push will be the fastest speed of information will be pushed to the earthquake around the user to realize the earthquake warning. Earthquake early warning, so that it can be done before the arrival of destructive transverse wave notification to the user. When an earthquake occurs, Earthquake Express will push messages to users in the corresponding associated areas according to the magnitude of the earthquake. Users in the earthquake zone will be alerted to the news of the earthquake at the first time, and users in other areas will not be disturbed by this message, which will win valuable escape time of several tens of seconds.