Group 1 - The core theme of the article revolves around the significance of the Chinese New Year's Eve, known as "除夕," which symbolizes the transition from the old year to the new one and evokes deep feelings of nostalgia and reflection on life [1][2] - The first theme identified in the poetry related to New Year's Eve is homesickness, with notable examples including the poem by Gao Shi, which expresses the sorrow of being away from home during this special time [1] - The second theme is the tradition of staying up late on New Year's Eve, known as "守岁," where people await the arrival of the new year, highlighted by various poets who capture the essence of this custom [1] - The third theme reflects on the passage of time and the fleeting nature of life, with poets expressing their thoughts on aging and unfulfilled aspirations, showcasing a more introspective side of New Year's Eve [2] - The fourth theme presents a sense of optimism and celebration, with poets expressing joy and contentment during the transition to the new year, emphasizing the festive spirit associated with New Year's Eve [2] Group 2 - The article discusses the tradition of posting Spring Festival couplets on New Year's Eve, which is an essential part of welcoming the new year, with the most notable couplet being "天增岁月人增寿，春满乾坤福满门," symbolizing blessings and prosperity [2]