Eternal tower mission: lurking to send information to spies

You can wait for the system prompt in the fortress in Ehrt: the rift of time and space leading to the underworld is about to open. Please look for the opened rift in Ehrt's fortress map. Please download a link from the Internet that can be pasted on the Notepad, so as to mark the specific coordinates of the space-time cracks.

//What you need to pay attention to is that when you open a crack, the space-time crack is randomly painted on a point, that is to say, you must look for one by one among the N space-time crack opening points marked on your map, and only one will open.