BlackStar_BH
Concepts like Haki were nothing special in the Xianxia world. Cultivators had sharper senses than Observation Haki. Something like killing intent or sword intent could exert more pressure than King's Haki. Even in Wuxia novels, there were many body forging techniques that could compete with Armament Haki. Apart from the existence of devil fruit, I don't think the world of One Piece is very special. A 'Heavenly Demon' from a random Korean martial arts novel could even kill Kaido.
You need to distinguish between 'see' and 'predict'. Read Tales of Demons & Gods. There is a cultivation technique called Heaven's Divination Technique. If you compare it to Observation Haki, it's like a drop of water and an ocean. There are many examples of techniques that allow cultivators to calculate the future and see the past. Can Observational Haki see the past? Writer-san, you wrote an ATG fanfic, are you pretending you don't know that a cultivator's Soul Power is capable of more than Conqueror's Haki? Come on, we even need to discuss Armament Haki, it won't even be able to penetrate a cultivator's dharma weapon. In short, everything Kaido has will be even more special if you send him to the world of Wuxia. In the Xianxia world, everything called haki is just a joke.
BlackStar_BH:The observation haki which can make its user see the future, is nothing special, right? The conqueror haki which can make its user destroy the will of the opponent, is nothing special, right? The armament haki which can destroy the body of the opponent without touching it, is nothing special, right?