Board Thread:Help Desk/@comment-4264287-20140426013510/@comment-17155410-20150407101808

No, NPCs stay if there is hallow near the village. My guess is because it isn't evil or corrupt or anything, hallow means "holy" or something. I clentaminated most of the crimson on my world and when it switched to hardmode I spread some hallow to fight the crimson. I actually kinda like the hallow, it is bright and not scary and the enemies are cool. I hate corruption, the soul eaters and worms are so annoying and the dark purple is scary. The crimson is ok, the enemies are gross but I like the color red, and there are not many crimera and no worms. If you want to rid your world of the crimson/corruption and/or the hallow, clentaminate it and make seperate worlds to farm resources from the crimson/corruption and hallow. A good way to make safe houses is to suspend them in the air and make them out of wood or some non-contaminable block. I actually got rid of all the corruption on my first world, but that world is on normal mode.