This is so badly written it is hilarous, like yeah all the cultivator that walked in the cave and stand at the entrance did not see the very obvious purple feather that the MC could spot from 50m away... like it author did not put the weather out of the way nah the MC pointed to where they where a couple of panel before 
Everyone is written like dumbass that know nothing just to make it seem like the MC is smart 
I mean the poison clan that is looking for a centipied would not know some of the basique of the centiped comportement ? like people before the internet did know stuff too you know wikipedia is not the only source of human knowledge, feel like if a farmer would not know how to farm basique crop just to make the MC feel smart