It's clear that the prophecy isn't going to come true. The prophecy says that shenglong will have to sacrifice his son in order to save the world. This means that there will be a struggle to get the three scrolls and bring winter back to heaven. But the prophecy doesn't seem to be coming true. It says that the world will be saved if the scrolls are captured and brought back to earth. But it also says that people will die if they don't get the scrolls. This is the worst thing that could happen to mankind, and it's the only thing that can save it. The only way to save it, the prophecy says, is for the scrolls to be captured. But that's not going to happen, and the only way that the scrolls can be captured is if the world is destroyed. So the only option is to sacrifice the son of the man who gave them the scrolls, which is what he's doing right now. But if the prophecy comes true, then he'll have to make another choice, and he won't have to regret it.