I have listened to a famous Korean movie critic's podcast explaining his interpretation of this movie and I thought it was amazing to me that movie actually had deeper meanings. The motive of this movie came when the director encountered the death of one of his relatives and the director found it rather strange that there was no cause/reason to his relative's death. So he started to think about good and evil.

spoilermaster's spell on Jongu's daughter. The director purposely tries to confuse the viewers by showing the Japanese guy suffering when the shaman was sacrificing "white" chicken and hammering nails on the korean totem which represents the guardian of humantiy. After the Japanese guy recovers the camera pans to the background showing the woman with the white cloth who was trying to assassinate the japanese guy during his spell. The white cloth woman is an ancient/godly being like a guardian of village/mountain. She represents Cosmos.She trys to kill the Japanese guy because he is a threat to her territory. Jongu asks her why is it happening to his own daughter. She answers "because the human's father made sin by doubting and killing a human."(bible reference) She answers everything directly when Jongu asks a question. She has one answer and it is forceful.(director's sarcasm on religion?) Jongu cannot agree with her answer and says "thats because my daughter was sick first!" To Jongu, he was just trying to save his daughter and her answer is more evil from his perspective . Oh my god, I will stop here since the podcast is 2 hours long. there are many bible reference and other stuff I missed.)