At the end of Xi Murong's poem, the phrase "homesickness is a tree without rings, which will never grow old" fully expresses that people's "thoughts and feelings" will not disappear gradually because of the loss of time, but will always be fresh. Expressed the author's deep homesickness.
Both poems express the author's attachment to his hometown. Wanderers and vagrants who are far away from home hope to return to their roots even in their octogenarian years.
I hope I can help you ~~O(∩_∩)O~~