工作室确认：演员于朦胧坠楼身亡，微博也发通报→

Core Viewpoint - The article discusses the incident involving actor Yu Menglong, who was rumored to have fallen from a building, leading to widespread public concern and social media attention [1]. Group 1: Incident Overview - On September 11, actor Yu Menglong was reported to have fallen from a building, which sparked significant interest and led to multiple trending topics on social media [1]. - Yu Menglong's studio issued a statement later that evening, addressing the rumors surrounding the incident [2]. Group 2: Social Media Response - The official Weibo account "Weibo Observer" highlighted the public's concern and the spread of unfounded conspiracy theories related to the incident, particularly from a user who posted misleading content [3]. - The platform has taken measures to combat the spread of false information and has reported the user for their actions [3][4]. Group 3: Actor Background - Yu Menglong, born in 1988 in Urumqi, Xinjiang, is a Chinese actor and singer known for participating in the talent show "Happy Male Voice" in 2013, where he ranked tenth nationally [7]. - He has appeared in popular dramas such as "Eternal Love" and "The King's Avatar," with upcoming projects set to air in 2025 [7]. - Yu Menglong is associated with two companies, both of which have been deregistered: Shanghai Qimeng Film and Television Culture Studio and Dongyang Xianmeng Film and Television Culture Studio [7][8].