Recently, the Korean entertainment program commemorating Dai S (Tu Hy Vien) aired and revealed that the real reason leading to the actress's passing was due to sudden cardiac arrest.
In the program called "The secret of birth, aging, and death of celebrities", her husband - Koo Jun Yup - did not appear directly, but the story was recounted by the MCs with his consent.

According to the program content, Barbie Hsu contracted flu A (H1N1) after bathing in hot spring water. Her condition quickly worsened and caused cardiovascular complications. When Barbie Hsu's health condition deteriorated, her family considered taking her to a large hospital. However, the actress expressed her desire to go home to rest.
The family then booked a plane ticket to take her back to Taiwan (China), but on the way to the airport, Tu Hy Vien suddenly had a cardiac arrest. The family immediately took her to a nearby hospital for emergency treatment for 14 hours, but could not save the actress.
The night before, Barbie Hsu was still happily dancing with her family. But in a very short time, she collapsed until she passed away. Everything happened too quickly, making those present unable to react and fall into shock.
In fact, Barbie Hsu's health has declined for many years. The actress has experienced pre-eclampsia and postpartum bleeding, making her immune system vulnerable. When infected with influenza A on a weak lung background, her body was not strong enough to hold on to wait for the day to return to her hometown for treatment.

Barbie Hsu passed away in the arms of her biological mother, husband DJ Koo, two children and younger sister and brother-in-law. Just one day before that, DJ Koo was still by his wife's side in happy moments. Less than 24 hours later, he had to witness her lying on the hospital bed, breathing weakly and then quietly leaving.
Barbie Hsu (Dai S) was born in 1976 in Taiwan (China), is a famous singer, MC and actress in Asia. She became widely known to the public after the role of Sam Thai in the movie "Boys Over Flowers" (2001), bringing her name to the ranks of A-list stars.
Throughout her career, Barbie Hsu made her mark through many hit movies and was a sought-after advertising face in the 2000s. In 2011, she married Wang Xiaofei, divorced in 2021 and then remarried DJ Koo (Koo Jun Yup).