7码层进式阶梯倍投法简介：After exiting the arch, there is a corridor surrounded by a pond. Perhaps because it was too dark, the water in the pond looked as black as ink, like a pool of stagnant water without a single ripple.
After exiting the arch, there is a corridor surrounded by a pond. Perhaps because it was too dark, the water in the pond looked as black as ink, like a pool of stagnant water without a single ripple.
