It is with profound sorrow that we share the unexpected passing of our family member, colleague and friend, Feng Yunfei, on September 13, 2025, at the age of 41.

Yunfei Feng was a distinguished researcher and engineer whose career bridged academia and industry. After earning his Ph.D. in Computer Science, Yunfei pursued a path of innovation ranging from machine learning and computer vision to sensor technologies and medical imaging.

He authored and co-authored more than twenty scholarly publications, advancing knowledge in areas such as activity recognition, indoor localization, and computer-aided medical diagnostics. His work in deep learning for healthcare applications demonstrated his passion to using technology for human well-being.

Professionally, Yunfei worked at Walmart Global Tech, where he applied his expertise in artificial intelligence and large-scale systems to solve complex challenges. His work was widely recognized and cited, earning respect across both academic and professional communities.

Beyond his technical accomplishments, Yunfei was admired as a colleague and mentor — someone who combined intellectual rigor with generosity of spirit. His achievements stand as a testament to his brilliance, perseverance, and commitment to making a meaningful difference through science and technology.

In his family life, Yunfei Feng was equally a source of sunshine, warmth, and kindness — a devoted son and beloved grandson. He was always respectful and caring toward his parents and grandparents, expressing thoughtfulness and gratitude in both words and actions. Not only was he considerate and capable, but he often took the initiative to share household responsibilities, carefully tending to the needs of his elders. He accompanied them on many trips, showing constant care and making them feel comforted and cherished.

As a husband, he was gentle and attentive, responding with patience and understanding to his wife’s needs in both life and work, faithfully carrying the responsibilities of their home. Looking to the future, he was filled with joy and anticipation as he carefully prepared to welcome their soon-to-be-born son, eager to pass on all his love and devotion to the next generation.

Yunfei was not only the pillar of his family, but also a lasting source of pride for his loved ones. With sincerity and warmth, he brightened the hearts of those closest to him, embodying responsibility and devotion through his actions. His smile could always lift the clouds, and his presence filled his home with comfort, warmth, and hope.

我们怀着无比沉痛的心情告知：我们的家人、同事与朋友 冯云飞 于2025年9月13日不幸辞世，享年41岁。

冯云飞是一位杰出的研究人员和工程师，他的职业生涯贯通学术与产业。获得计算机科学博士学位后，他始终走在创新的前沿，研究方向涵盖机器学习、计算机视觉、传感器技术及医学影像等领域。他发表及合作发表了二十余篇学术论文，在活动识别、室内定位以及医学诊断辅助等多个方向推动了知识进步。他在深度学习医疗应用方面的工作，展现了他以科技造福人类的热情与初心。在职业生涯中，冯云飞任职于沃尔玛全球科技，将其在人工智能与大规模系统方面的专长应用于解决复杂挑战。他的研究成果得到广泛认可与引用，赢得了学术界与业界的尊敬。除了卓越的技术成就之外，冯云飞更以同事与导师的身份受到敬仰——他兼具学术严谨与宽厚仁心。他的成就不仅见证了他的智慧与毅力，更彰显了他以科学与技术创造有意义价值的执着追求。

在家庭生活中，冯云飞同样是阳光灿烂、温暖热情的好儿子、好外孙。他对父母、姥姥姥爷始终孝顺关爱，言行中充满体贴与感恩。他不仅懂事能干，更时常主动分担家务与责任，细心照顾长辈。他曾多次陪同长辈出游，关怀备至，让长辈们感受到安心与温暖。 作为丈夫，他对妻子温柔体贴，体惜她在生活与工作中的各种需求，用耐心与理解守护这份家庭的责任。在家庭的未来中，他更是满怀喜悦与憧憬，细心准备迎接即将出生的孩子，盼望着能将所有的爱与责任传递给下一代。 冯云飞不仅是家庭的依靠，更是亲人心中永远的骄傲。他用真诚和热情照亮了家人的心灵，用行动诠释了责任与担当。他的笑容总能驱散阴霾，他的陪伴让家庭氛围充满温暖与希望。

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