Bi Shujin sued his ex-girlfriend and netizens for defamation. The prosecutor determined that the comments were reasonable and did not prosecute.
Quick Look
- Singer Bi Shujin accused his ex-girlfriend Wu Siying and five netizens of posting untrue statements about his cheating, drunken gaffes and abandoned pets on social platforms, which constituted blatant insult and aggravated slander.
- After investigation, the Taipei District Prosecutor's Office concluded that Wu Siying was the person who witnessed the incident, and other netizens relied on her posts to paraphrase the comments.
- Although the content was harsh, it was a reasonable comment on the conduct of a public figure and did not meet the criminal threshold.
AI-generated summary
Why It Matters
Bi Shujin is a well-known singer who dated Wu Siying for eight years. After the breakup, Wu Siying revealed the details of their relationship on social media, and Bi Shujin sued for defamation.
2026/09/14 10:42
The picture shows the artist completing his book. (File photo)
[Reporter Liu Yongyun/Report from Taipei] Singer Bi Shujin was dissatisfied with his ex-girlfriend Wu Siying's disclosure of their dating history on social media, claiming that he had cheated on her multiple times and lost her temper while drunk, and called his current wife a "mistress." Five other netizens forwarded the comments, and Bi angrily sued 6 people for blatant insults and aggravated slander. An investigation by the Taipei District Prosecutor's Office determined that Wu personally witnessed the relationship between the two, and the other five netizens made comments based on the post. Although the content was harsh, it was still a reasonable comment on the conduct of a public figure, and the six people were not prosecuted.
Bi Shujin filed a lawsuit stating that Wu Siying had been dating him for eight years. After they broke up, Wu Siying posted on Instagram and Threads from April to November last year, claiming that he had cheated on many times during the relationship, had drunken gaffes, and would unplug the pet monitor at home before dating. He also accused him of abandoning his dog and his current wife as a "mistress," and criticized him for hurting his former company, former boss, and former colleagues in order to protect his marriage and acting career.
Please read on...
After the post was exposed, five other netizens forwarded and left messages one after another. Some people compiled a "lazy bag", saying that Bi Shujin had drunkenly lost his temper many times with his girlfriend during the eight-year relationship, and had other relationships, and that his current wife was a "mistress." Others accused him of abandoning his dog, unplugging the pet monitor before dating, and even criticized him with words such as "human AIDS" and "brain powder."
The prosecutor pointed out that Bi Shujin has considerable popularity and social influence, and his words and deeds are subject to public comment; Wu Siying once dated Bi and personally experienced the relationship between the two. The remaining five people quoted, commented or compiled based on Wu's posts, which were not baseless or fabricated. Even if part of the content cannot be proven to be completely true later, as long as the speaker has reasonable grounds to believe it to be true and does not know it is untrue or out of gross recklessness and malice, it is still protected by freedom of speech.
The non-indictment letter also mentioned that although some of the words used were harsh and harsh, which may make Bi feel unhappy, the overall comments were still comments on his relationship management, marriage, work and pet care, which did not reach the penalty range of public insult. Since there was no other positive evidence to confirm the crime of the six people, they were all punished without prosecution.
☆Excessive drinking is harmful to health. Drunk driving is prohibited☆
What to Watch
AI outlook — possibilities, not facts
Bi Shu tried his best not to complain and decided to file a protest
Possible · Within weeks
Open Questions
- Will Bi Shujin protest the prosecutor’s decision not to prosecute?
- Will this case affect the discussion on the boundaries between artists’ privacy rights and freedom of speech?






