In this chapter, we learn that it is the rule of the sacred place that every ascender must serve in order to be released. In other words, if you want to be a cultivator in the upper worlds, you're going to have to serve in the lower worlds. This means that you've got to find your sister first, then help Xun get back to the nocturnal world, then rebuild the body of the blue dragon, and so on. It's a lot of work, but you have to do it. So, you just have to wait for the opportunity to come and serve. This is the first time that we've heard anyone say that they've had to serve, and it's weird because it seems like they're getting used to this new level of energy. The upper world isn't all that different from the lower world, but the upper world doesn't have all that much to do with it. This tunnel is called a major world tunnel, and you can find natural energy jades there. You can leave anytime you want, as long as you have enough innate energy to do so. The other tunnel is a 10 grade tunnel, which means you can't find enough natural energy to dig for stones. You have to dig all the way down to the bottom of the tunnel to find the stones.