First of all, the "snow" in the poem symbolizes the harsh and difficult external environment, which may refer to the social environment and the difficulty of revolutionary struggle at that time. The "new era" represents a new era, that is, a new era after the victory of the revolution.
Secondly, the "breath of the field" in the poem is the author's memory and yearning for his hometown, and it also expresses the author's love for life and nostalgia for his hometown. At the same time, "the sincerity of a child" and "the sincerity of feelings" are the embodiment of the author's sincerity and feelings for the people, which is also the most fundamental factor that makes this poem moving.
Generally speaking, this poem expresses the author's yearning and expectation for the victory of the revolution, as well as his courage and determination to the difficulties and challenges. At the same time, it also reflects the author's love for life and sincerity to the people.