我们怀着无比沉痛的心情告知大家，我们深爱的朦胧，于2025年9月11日坠楼身故。经警方工作，已排除刑事嫌疑。愿逝者安息，愿生者坚强。 每经编辑｜何小桃 9月11日，演员于朦胧的名字突然冲上热搜。有自媒体发布消息称，于朦胧于9月11日凌晨在北京坠亡。该消息迅速引发全网关注。 11日晚些时候，@于朦胧工作室 发文证实了此消息： 三湘都市报记者查询于朦胧社交平台看到，于朦胧上次更新动态是在8日前，记者注意到，于朦胧9月10日21:31还上线了微博。 于朦胧最新一部热播剧是《临江仙》，其在剧中饰演玄天使者。其还有一部待播剧《风起大漠》，公开消息称，于朦胧在《风起大漠》里饰演李敢，飞将 军李广之第三子。 圈内有好友发文哀悼后删除动态 9月11日，多位圈内人士通过社交媒体发声表达震惊与悲痛。 演员文苡帆发悼念长文，以"今夜，星星回去睡觉了"开篇，提及"听到跳楼消息时呆立原地"、"愿你回到星星上，那里没有痛苦"等语句，并呼吁关注心理 健康，该动态随后被删除。 演员邢菲，曾与于朦胧合作《明月曾照江东寒》，发文称："希望是假的！一定是假的！"此后也删除了该动态。 高泰宇，曾与于朦胧合作电影《为爱放手》，发文："你的笑容，永远定 ...

Core Viewpoint - The article discusses the rumors surrounding actor Yu Menglong's alleged fall from a building, highlighting the spread of misinformation and the response from social media platforms and the public [3][5][11]. Summary by Sections Incident Overview - On September 11, 2025, rumors emerged on social media claiming that actor Yu Menglong had fallen from a building in Beijing, which quickly became a trending topic [9][11]. - The last update from Yu Menglong on Weibo was on September 3, 2025, and he was active on the platform as recently as September 10 [10]. Misinformation and Response - The official Weibo account @围脖侠 reported that a user had spread unfounded conspiracy theories regarding the incident, which led to significant misinformation [5][6]. - The platform emphasized the importance of relying on official announcements and warned against believing in conspiracy theories and unverified information [6]. Reactions from Peers - Several industry colleagues expressed shock and sorrow over the news, with some posting tributes that were later deleted [17][18]. - A friend of Yu Menglong's, who is also in the industry, shared a poignant message reflecting on the situation [19]. Official Confirmation - Property management confirmed that there was a fall incident at the location, but they could not confirm if it involved Yu Menglong [20]. - The local police stated that further information would be provided through official channels [20]. Impact on Projects - Yu Menglong's recent work, including the show "长夜行," faced disruptions, with the production company unable to reach him or his agent for updates [22]. - A scheduled broadcast featuring Yu Menglong was replaced with another program due to the uncertainty surrounding the situation [22].