Oasis always appears at the places where water is ample, the Hexi Corridor oasis is also formed by the slush from Chilian Mountain, and has become the largest agricultural irrigation district.

• 有水的地方才能形成绿洲,祁连山的雪水孕育了河西走廊绿洲,也使其成为全省最大的灌溉农业区。