C1027 Return without success

What kind of ominous sign could cause an old monster like this old man, who had been holed up in a cave for more than a hundred years, to come out and give advice?

Of course, it was a calamity that concerned the survival of mankind.

"The divination is extremely dangerous. In the end, I was unable to hold it in and opened the Heaven's Eyes. " The old man looked at me gloomily