This poem mainly uses the brushwork of images. There are four symbolic images in the poem: one is a "small stamp", which symbolizes the homesickness of the author when he was young. A mother cares about her son, who misses her. The second song is "A Narrow Boat Ticket", which symbolizes the homesickness of the lovers in the author's youth. This is the yearning and yearning between young men and women. The third part is A Short Grave, which symbolizes the author's nostalgia for life and death in middle age. This is an unforgettable miss that can only be buried in the bottom of my heart and cannot be passed on between two people. Although it is only a stone's throw away from the ancient tomb, it is so far away. The fourth song is "A Shallow Strait", which symbolizes the author's nostalgia for his old country in his later years. Although the strait is "shallow", the feelings of the motherland are unfathomable. Moreover, the author's emotion is deep, progressive step by step, and unforgettable. The connotation and realm of the author's "homesickness" has been deepened and promoted with his own maturity and the development of the times, from personal affection and affection to patriotism on both sides of the strait. This makes Nostalgia have a distinct color of the times. The four images of "stamp", "boat ticket", "grave" and "strait" seem ordinary, but they are full of poetry: stamp-affectionate (strong) boat ticket between mother and son-loving (warm) grave between husband and wife-sadness of life and death (huge) strait-homesickness (deep).
The poet found a corresponding word to express his homesickness in four stages of his life: childhood stamps-boat tickets when he grew up-later graves-now straits. Stamp: When I was a child, I left home to study, and my homesickness could only tell my mother what I thought through that small stamp. Ticket: Being driven away by life when you grow up. At this time, I miss my mother and my lover. Therefore, the lingering homesickness is only about the round-trip ticket. Grave: No matter when I was a child or when I grew up, homesickness was entrusted and released. Later, the gap between time and space could no longer be communicated. A short grave separated me from my mother, the living and the dead forever. Neither stamps nor boat tickets can open this small tomb, nor can they connect this barrier of yin and yang. When the poem comes here, the feelings are aggravated and the tragic atmosphere is stronger, which makes people sigh. Strait: Now, that shallow strait not only separates me from my hometown, but also is insurmountable. These four counterparts all show the feelings of wandering, loneliness, parting and no return.