Editorial note: The following report compiles the key claims and background details currently circulating online. None of these allegations have been independently verified.
By Cai Siyun, Vision Times
Following the mysterious death of mainland Chinese actor Yu Menglong, also known as Alan Yu, on Sept. 11, speculation of foul play has ignited across Chinese and overseas social media platforms. A growing number of posts now allege that actress Kan Xin, rumored to have been Yu’s girlfriend, may have had ties to individuals accused of orchestrating his death.
A mysterious girlfriend?
Since Yu’s fatal fall on Sept. 11, 2025 from a luxury high-rise in Beijing, the number of alleged suspects has reportedly grown from six to 17, with Kan Xin among those newly-implicated. Though police were quick to rule the death a tragic incidence stemming from a “night of heavy drinking,” the suspicious circumstances surrounding Yu’s death have ignited a tidal wave of netizens, industry peers, and activists calling for accountability and a thorough investigation.
According to several unverified sources, the perpetrators may have planted a “girlfriend spy” to monitor Yu’s movements and report on his private investigations weeks before his death. Social-media commentators suggest that person was Kan Xin — who allegedly revealed Yu’s efforts to collect evidence of financial crimes — ultimately led to his capture and death.
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Observers have drawn parallels to the 2016 death of actor Qiao Renliang, whose case also stirred allegations of betrayal and cover-ups among China’s entertainment elite. Independent YouTube commentator Li Muyang recalled paparazzi photos from 2021 showing Yu and Kan holding hands while crossing a street, with Kan leaning into Yu’s arms as he gently patted her head. The images fueled rumors of a romantic relationship between the two.
Netizens later noted that following the 2021 reports, Kan Xin received a Golden Rooster Award nomination in 2022 (a highly prestigious award in China akin to the Oscars in Hollywood), while public discussion of her connection to Yu had all but vanished from the internet. When Yu began new film projects in 2023, fans noticed that he appeared “distant and withdrawn” — behavior some netizens now associate with his emotional turmoil.
Some users even posted alleged footage of Yu screaming in pain as his stomach was cut open to retrieve some type of device. “The flash drive containing money-laundering evidence was betrayed by Kan Xin, who told the wrong people,” a viral post claimed. No credible evidence has yet surfaced to confirm this assertion.
Connections and deleted posts
Online investigators have now resurfaced photos of Kan Xin alongside director Xin Qi and producer Cheng Qingsong, as well as a group dinner photo posted by Cheng that included actress Tian Hairong, film executive Fang Li, and Kan Xin — suggesting pre-existing social links among several figures now implicated in the rumors surrounding Yu’s demise.
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On the day of Yu Menglong’s death, Cheng Qingsong posted to social media: “Yesterday I was supposed to watch a show with Kan Xin. Afterward we had dinner with old classmates.” He even attached screenshots of a chat with Kan Xin. The post was deleted shortly after Yu’s death.
Growing public ire
Other posts referenced actress Song Yiren, who allegedly mentioned that a woman had been assigned to “keep watch over Yu” and was later paid to leave China. Many online users expressed sympathy and outrage: “Yu Menglong’s fate was truly tragic,” said one netizen.
Commentator Li Muyang emphasized that no “conclusive evidence” links Kan Xin to the conspiracy, but noted that her social ties to individuals named in the so-called “17-person gathering” have fueled suspicion among the public.
If the allegations were true, Li said, the case would mirror that of Qiao Renliang, another actor believed to have gathered sensitive evidence on influential figures before being betrayed by someone close to him.
Who is Kan Xin?
Public records show that Kan Xin was born in Xianning, Hubei Province, and graduated from the Tianjin Conservatory of Music before signing with Beijing Wannian Jinhe Culture Agency. Corporate filings reveal that in 1993, Kan invested in the Beijing Kaiwen Police Technology Research Institute, holding an 8.4 percent stake in the 5 million yuan (about USD$690,000) enterprise.
Director Cheng Qingsong later recommended her for the film “Lyuliang Wen Ying (Song of Spring),” which earned her a Golden Rooster Award nomination for Best Actress. Though unverified, the speculation surrounding Kan Xin reflects a deepening public distrust within China’s entertainment industry — a sector often accused of concealing corruption, exploitation, and political entanglements behind its glamorous and glitzy façade.
The Qiao Renliang tragedy has resurfaced in public discourse as a symbolic precedent: Both Qiao and Yu were young, outspoken, and reportedly determined to expose wrongdoing before their sudden deaths.
As censorship tightens on Chinese platforms, overseas commentators have taken up the task of documenting claims and testimonies, framing Yu’s death as a symbol of resistance against systemic silence. “What people fear most is not death itself,” one WeChat user wrote, “But that the truth will die with it.”
