2. Father's grassland, mother's river. The whole song is full of deep attachment and love for grassland, hometown and motherland, as well as yearning and respect for frontier life.
3. the horizon. In the lyrics, the horizon is an endless prairie, and the end of the prairie is an endless Gobi desert. Although desolate, it has infinite freedom and vastness, which makes people yearn for it. Expressed yearning, praise and nostalgia for the frontier fortress.