Man said it was the mountain stream somewhat far from the Small Town. They went downstream of the lake before, where the lake water flows out from the town's big lake, continuing as a broad river, and disappearing into the desert.
Because of the water, an oasis formed.
And at a sixty-degree angle from there, there was also a long but much narrower oasis. Manbao and the others thought it was also a water outlet from the lake, but upon visiting, they realized that the water there was flowing in, not out.
Below the big lake, there is a water source. This one, just like the outlet one, originates from an unknown place, appearing in the desert and slowly flowing toward the big lake, eventually converging into it.
Man mentioned the mountain stream's location is twenty miles away from the Small Town. Aside from sparse grass and trees by the water, other areas are all Gobi, so there are especially many rocks in the water as well.
