Of course, to Zhao Hai, this grass was not very useful. If there was really any use for it, the only thing it could be used for was that this grass proved that the laws of heaven and earth could recognize people. They did not see them with their eyes, but sensed them through their auras. In other words, if the people from the blood massacre sect went to the Shadow Realm, the people from the Shadow Realm would not see them. Instead, they would sense a different aura. This was why they attacked the people from the blood massacre sect.
It could be said that the law of heaven and earth had seen the people of the bloody massacre sect. However, that kind of grass was like a face-changing mask, blocking a person's true appearance. If the law of heaven and earth couldn't see a person's true face, they would think that the person was one of their own and would not attack.
