Can this "Great immortal" grow some fucking balls and just kill them already? I bet it's going to take yet another hundred thousand chapters of them bad-mouthing him and calling more and more people to arrive only for the MC to stand like a little bitch until he finally, after all that massive amount of wasted time slaps them once and then walks away like a coward, and then ends up having to slap them again and again and again until eventually, after a billion years he mans up and just kills them. Like, if you're so fucking great and mighty and don't have the time to deal with insects, then wipe them out from the get-go you moron!