Raiders of Deep Pit Adventure

When you walk across the plank, you will see a ropeway (the last thing you need, regardless of it), turn back from the broken part of the sink, walk into the stone room, go up from the ladder, turn the switch, go out from the exit with a ladder, and then stop at the blue hole, enter the hole, walk through the sink, get on the ladder, and then go up from the iron pipe. You will see three valves reaching the upper end of the sink.

first, close the three valves in turn, drop the rope and slide down along it, go through the ground gate at the bottom of the sink to the other side, climb the ladder, and you can see two valves. After closing the valve on the side of the small wheel, return to the opposite side along the original road. Open the valve on the water side and still walk to the opposite side. Go up and open the valve on the side of the small wheel (you closed it originally), and then you will see the big wheel start to turn. Don't go in a hurry, close the valve on the side of the big wheel (at this time, water will flow through the stone chamber), and then climb up from the big wheel.

go ahead and see a cableway. (If you can see a telescope on the side of the ropeway, it's useless.) Cross the ropeway to the opposite side and go straight down until you come to six water pipes. Enter the pipeline from A1, go straight up through B5 to A5, and you will see an iron gate, go out through the iron gate, go up from outside the pipeline until A9, open another iron gate to enter, go up through B9 to A11 and continue to go up and out of the pipeline, then press the switch. You will see water flowing down the slide.

When you go down the slide, you will see that you are back at the water wheel. This time, climb up from the small wheel, pass the cableway you first saw, and go to the opposite side. You will find that this is the way you first walked, and you will still go back to the stone room, go up the ladder (somewhat different, water is flowing from one side of the stone room), turn the switch again, and you will be done.