In other words, a man-made lake.SoAll of you have been thinking of setting up a gathering point at the mountain base, right?To increase the amount of faith, right?That way, you can gather up a lot more faith.Which also means.Your real motive isn't the dam-That so?However, for that to happen, the mountain base needs a lake.It is to block the river to create a lake.All of you have decided to use the man-made lake as a new gathering point.