can. The general attack and even the fire can’t hurt the ghosts. There are only two things that can eliminate this difficult race. One is Longjing, which is the son of the forest at the time to create the ghosts, and the other is Valyrian steel. Made of weapons, Valeria steel is a magical weapon, extremely sharp, but has now been lost, so the related objects made of this steel are extremely rare, the long sword “long claw” that was once ancestral to the Mormon family. (Longclaw) is one of them, Joan Snow has used this to kill a different ghost.