What are the meanings of the four images in Homesickness?

The poet chose four images from his personal life, namely "stamp", "boat ticket", "grave" and "strait" to express his feelings. This image seems ordinary, but it contains full poetry:

Stamp (small)-Mother-child affection (long)

Boat ticket (narrow)-love (thick)

Grave (short)-the sorrow of life and death (great)

Strait (shallow)-homesickness and sadness (endless)

Let's take a look at the analysis of writing: (it may be helpful to you)

This poem mainly uses the brushwork of images. There are four symbolic images in the poem: one is a "small stamp", which symbolizes the author's homesickness when he was a teenager. Mothers care about their sons, and sons miss their mothers. The second 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. Thirdly, a "short grave" symbolizes the author's homesickness for life and death in middle age. This is an unforgettable miss, which can only be buried in his heart, but can't be passed on between two people. Although there is only a short distance inside and outside the tomb, it is so far away. The fourth is the "shallow strait", which symbolizes the author's homesickness for his old country in his later years. Although the strait is "shallow", the feelings for the old country are unfathomable. Moreover, the author's feelings are deep in layers. It has a long history and endless aftertaste. With its own maturity and the development of the times, the connotation and realm of the author's homesickness have been continuously deepened and promoted, from personal affection and affection to patriotic feelings on both sides of the Taiwan Strait, which makes homesickness have a distinct color of the times. From the four images of "stamp", "boat ticket", "grave" and "strait"

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. Stamps: When I was a child, I left home to study. I was homesick and could only tell my mother my thoughts by writing letters. Ticket: Being driven away by life when you grow up. At this time, he missed his mother and his lover. The homesickness is only attached to the round-trip ticket. Grave: No matter when I was a child or when I grew up, homesickness was entrusted and disliked. Later, the gap between time and space can no longer be communicated. A low grave separated me from my mother, the living and the dead forever. Neither stamps nor boat tickets can open this small grave. It's embarrassing. Strait: Now, the 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.

Stamp: I left home to study when I was a child. Only through that small stamp can I tell my mother my thoughts by writing letters.

Ticket: mourn your lover.

Grave: separated me from my mother-the living and the dead-forever.

Strait: It not only separates me from my hometown, but also is insurmountable.

I hope I can help you! Have a nice day O(∩_∩)O~ Hope to adopt!