Introduction:

Let's start from the place where there are water valve switches. From the picture, there are three on the left, which are set as left 1, left 2, left 3 and right 2 in turn, and right 1 and right 2 (counted from left to right in the order of 1 and 2). When we arrive here, put down the rope first, then close all three water valves on the left, and then reach the opposite side. Go back to the left and open left 3, then you can see the water flowing to the right; Go back to the right, turn right 1 on and turn right 2 off. At this time, you can find that the wheel corresponding to the right 2 starts to turn, and you can go up and reach the river. After arriving at the river, enter A1 and arrive at A5, and the order is A1, A2, A3, A3A, B3, C3, C4, C5, B5, left A5A and left A5. Then go out to A9, and then go to A11 to reach the dam top, which is basically complete, and then go down the river to the water valve (on the right). At this time, you can see that the wheel on the right 1 starts to turn because of the water rushing down, and then go up to the right 1, return to the place where you just started to enter, and close the big valve there again.