In the case of railway policeman Li Chenghan's death in the line of duty, the first instance verdict showed that the suspect was found not guilty due to mental evaluation, which caused a strong backlash from society. The Kuomintang held a press conference on the 6th, denounced Tsai Ing-wen's judicial reform as a complete failure, and demanded a specific schedule for the "judicial mental hospital."

The Kuomintang held a press conference on the 6th, "Police family members have something to say! Don't let police nightmares become a regret again and again", and invited representatives of police family members to attend and express their voices.
Wang Zhenwen, the widow of Taipei County Criminal Police Captain Lin Anshun, who was shot dead by gangsters in 1997, said that the suspect who killed her husband was first acquitted. She worked on the case for 16 years, and finally the suspect was commuted to life imprisonment, but future suspects She will still be released from prison. She still feels like she has a nightmare. The judiciary basically despises the power of the police. She feels unfair for Li Chenghan and calls on Tsai Ing-wen to carry out judicial reform.
Police Families Representative Lin Huanwen even pointed out that when police encounter criminals with knives and guns, the police must first consider whether to fight back. What is the principle of proportionality in the use of police weapons? The police had guns but could not use them because they would have to write many reports after even using them. "How can it be so embarrassing that a person armed with a gun was hacked to death by someone with a knife?" The police actually had to buy pepper and chili water at their own expense. She sincerely suggested that the relevant units should It is important to face up to reform and improve police equipment.
Wang Yumin said that the verdict of the police killing case deepened society's distrust of the judiciary and also damaged the morale of the grassroots police. Tsai Ing-wen’s so-called judicial reform has completely failed. However, Taiwan's "Ministry of Justice" and "Ministry of Health and Welfare" mutually recommended the "Judicial Psychiatric Hospital", which has not seen any movement in four years. In addition to proposing amendments to the law through the "Legislative Yuan" caucus to provide more comprehensive protective measures for police officers on duty to ensure the personal safety of police officers, the Kuomintang also called on the authorities to prepare a judicial psychiatric hospital as soon as possible so that patients with mental illness who need custody can be properly accommodated. and treatment to resolve society’s doubts and uneasiness about mentally ill criminals.
Ye Yulan, a Kuomintang "legislator" who was a police university professor, said that a student sent her a picture. In Taiwan, killing cats and dogs will be sentenced to 2 years in prison, but killing police officers is not a crime. The judicial scale is biased and completely deviates from the law. People’s expectations for law and fairness and justice.
Ye Yulan said that the police are the front line of maintaining social security, and more comprehensive measures should be taken to protect their personal safety. Otherwise, if holes in the social safety net cannot be repaired in time, the public will be harmed. Therefore, the Kuomintang "Legislative Yuan" caucus will propose a draft amendment to Article 87 of the "Criminal Law". If the identification team determines that the defendant has no chance of recovery, he must have at least a lifelong isolation mechanism before he can be found not guilty. It is expected that the revision of the law will allow law enforcement officers to perform their duties. Sometimes there is more comprehensive protection.
In addition, Article 136-1 of the Criminal Law will also be proposed, adding that "anyone who commits rape and coercion with the intention of causing a civil servant to perform certain duties, hindering him from performing certain duties in accordance with the law, or causing a civil servant to resign, shall have his penalty increased by one-half. It is hoped that the revision of the law will provide more comprehensive protection for law enforcement officers when on duty, "I hope the authorities are serious. "
The Taipei City Retired Police Officers Association put forward two suggestions for improvement. First, strengthen police education and training, strengthen front-line police negotiation skills and crisis management capabilities, and establish simple and feasible standard operating procedures; second, establish substantial In the jury system, in addition to complying with the law, judges should also consider social opinions when trying cases. There is a balance between the legal "legal justice" and the people's "legal feelings". , to achieve a more appropriate balance.
Police officer Li Chenghan of the Chiayi Branch of the Railway Police was stabbed by a 54-year-old suspect surnamed Zheng while handling a dispute over ticket replacement on the Ziqiang train at the Chiayi Station of the Taiwan Railways on the evening of July 3, 2019. , organs were exposed, and he was sent to the hospital for emergency treatment and pronounced dead the next morning. On April 30, 2020, Zheng Su was found not guilty at the first trial of schizophrenia.