The experience of the disciples of Tianmen is not only about those who participate in these experiences. It also concerns all the disciples of Tianmen. Of course, all this is for the King of the Ring.
So from the very beginning, they took the recording platter made in what day and recorded some details. It is also convenient for the later King of Tianmen Ring to learn something from these recorded battles.
Even if it's just a little bit of gain, it's good. Accumulate slowly, always increase slowly.
What day did it come out? It's a picture of being besieged by a huge number of monsters. That kind of tragedy...