Introduction to springs and streams: A mountain spring gathers into puddles of stagnant water, and puddles of stagnant water connect to form streams. They flow freely between grassy mountains, twisting and turning, and there is always water. The illusion of flowing from high places. Even at the top of Guniuzhai, which is 4,017.3 meters above sea level, there is a pond of water two square meters wide and three to four inches deep.