夜梦建平窗月斜

Group 1 - The article reflects on the life and contributions of Dai Jianping, highlighting his kindness and support during critical moments in the author's life [2][3][6] - Dai Jianping's early life is described, including his background and character traits such as friendliness and leadership during high school [2][3] - The narrative emphasizes the bond formed between classmates during their time in the "Down to the Countryside Movement," particularly through shared experiences in the agricultural setting of Beidahuang [3][4] Group 2 - The article recounts significant encounters between the author and Dai Jianping, illustrating how Dai's assistance impacted the author's life trajectory [3][6] - It details Dai Jianping's journey from being a student to becoming the director of Beijing Tiantan Hospital, showcasing his professional achievements and the respect he garnered over the years [5][6] - The emotional weight of the author's reflections on Dai Jianping's passing and the lasting memories of their friendship is conveyed, culminating in a poetic tribute [6][9]