What is the function of sending seamless short messages to the other person's eyes in 360 mobile phone security guards?

That's actually the flash message function. Here's the thing: the short message you sent through the flash message function is directly displayed on the screen of your mobile phone without pressing read or open. And as long as the other party presses back or quits this message, it will disappear forever and cannot be retrieved. Just open it directly and read it without saving it. That's it.