“替英雄同学尽孝”，大学生坚持15年……

Core Viewpoint - The article highlights the enduring legacy of Zhang Yu, a student who sacrificed his life to save a neighbor, and how his classmates have continued to honor his memory through volunteer work and support for his family over the years [5][19]. Group 1: Zhang Yu's Legacy - Zhang Yu was posthumously awarded the "Ningbo Youth May Fourth Medal" and "Outstanding Communist Youth League Member of Hubei Province" [3]. - Following his death, his classmates established the Zhang Yu Service Team in 2010 to continue his spirit of volunteerism [8]. - The service team has made annual visits to Zhang Yu's parents in Ningbo, demonstrating their commitment to honoring his memory and supporting his family [10]. Group 2: Community Engagement - The service team has engaged in various community activities, including setting up the Zhang Yu Book House and participating in environmental volunteer activities in Xizhou Town [17]. - Zhang Yu's parents have also become active participants in community service, helping with disaster relief efforts during typhoons [17]. - The bond formed between Zhang Yu's classmates and his parents has transcended blood relations, creating a deep emotional connection that continues to grow over time [19].