(It seems that overnight, the whole industry suddenly realized that it is unrealistic to require users to always connect with the Internet. The entire consumer electronics industry has been committed to promoting full wireless connectivity to the Internet for the past two decades - from PCs to televisions, cameras to speakers. Of course, it also includes wireless devices in wireless devices and the ubiquitous smart phones, which are outstanding representatives of the beloved of the age. We usually use three methods to realize the wireless networking of smart phones: mobile broadband, Wi Fi and Bluetooth - these methods have become faster, more reliable and more convenient over time, and the limitations of use continue to decline. In this case, why should the whole industry push forward a large-scale wave to make the user program still available in the environment without Internet connection conditions? This document of xbaixing People's Website includes the following attachments:)