We from have the water valve switch the place to say, from 图面 left side said has three, supposes in turn for left 1, left 2, left 3 and right side two, right 1, is right 2 (1, 2 orders according to saw picture counts from left to right) when arrives here time, first lays down the string, then is completely closes the left side three water valves, then arrives the opposite, right 1 closure Left side again returns, is left 3 opens, by now was allowed to see right side the water passed through; Right side again returns, is right 1 opens, right 2 closure. By now was allowed to discover right 2 corresponding the wheel started to rotate, was allowed along this on, to arrive the riverside. To riverside after, enters A1 to arrive A5, the order is on A1 on A2 on A3 on A3A on B3A on C3 on C4 C5 left B5 left A5A left A5. Then leaves the gate to arrive A9, on again arrived the top of dam to A10, such basically may say completes, then will meet the with the current but (was in right side) may see because the water by now the next time to the water valve place to flush the right 1 wheel also to start to rotate, then along was again right 1 on, returns to place which just started to enter, closed again the there big valve has captured on OK provides 网友: The heaven to is left