The first kind is known to the disciples themselves, usually given by the gods. The most common is Hu Jia's Epiphany. Generally, when dreaming, you can see one or several foxes appear in front of the disciples, and then slowly become people. When this dream happens, the immortals must be there, and some immortals will tell you the date of departure.
It is not necessary for the immortal family to speak in the upper language, but it is also possible to speak in human language. Senior immortals can talk and listen to people, whether it is Chinese or English or other national languages. Don't think that jabbering is a powerful fairy, that's wrong. Of course, the top evil spirits will definitely say. As for whether to say or not, it is his own will.