Su Tang was the first to break the silence“ I suggest that we move on. Don't be in a hurry to refuse. Listen to me. The farthest time between the safe cabins we met the other day was only eight hours. We've been traveling for more than four hours now, and it's almost eight hours since we came out of the last safe house. Now it's only four hours before dark, so we have enough time to find the next safe house. What do you think? " Although what Sutang said was reasonable, Cain was not at ease. He thought for a while and then said, "we don't know how the safety cabins are distributed. I suggest going back the same way. Since there is a map, it's only a matter of time before we find the exit. There's no need to take risks. " Su Tang nodded thoughtfully, but then she asked another question“ Have you ever thought that the satiety pill in our hands can support us to find the exit? I said before that the circular open space is the most central part of the maze. In fact, it's just my guess. We can't see how far we are from the final exit on the map, but I know that if we go back now and add up for nine hours, we are bound to waste a satiety pill. The number of satiety pills in our hands is limited, and each one is very precious. " Cain fell into a silence. After careful consideration, he clenched his fist and compromised, "one hour, another hour. If we can't find it, we have to go back the same way." I didn't try my best to run when I just came here. In addition, Su Tang had to stop studying maps from time to time, so the physical consumption was not serious. If you run at full speed, you can go back in about three hours. So stay for about an hour at most. If you can find it, it's best. If you can't find it, even if you waste a satiety pill, you have to go back. Cain made a concession, Su Tang is not unreasonable, after all, he did everything for her. So Su Tang nodded quickly, "well, it's not too late. Let's look for it quickly." After a close search for nearly an hour, we finally found a safe house at the last moment. It's just - the setting of this safe house is very grim. Safety cabin: the safety cabin can only be opened after the sun sets. After entering the safety cabin, all personnel are not allowed to go out until the sun rises again( It's the same as the previous introduction, but in the end, there's an extra one.