Juvenile Justice Act Article 55-3

Where a juvenile refuses to accept a disposition made in accordance with Article 29, Paragraph 1 or Article 42, Paragraph 1, Subparagraphs 1 or 3 without justifiable cause, a juvenile investigation officer, juvenile protection officer, the juvenile’s statutory agent, or a person who is currently protecting the juvenile, the welfare or cultivation institution, health care institution, or an institution that implements transitional education or other appropriate measures may apply to the juvenile court for issuing an advice letter; where the advice is ineffective, the above-mentioned parties may apply to the juvenile court for detaining the juvenile in a juvenile detention center for an observation for not more than five (5) days.
中文原文 少年事件處理法第55-3條
少年無正當理由拒絕接受第二十九條第一項或第四十二條第一項第一款、第三款之處分,少年調查官、少年保護官、少年之法定代理人或現在保護少年之人、福利、教養機構、醫療機構、執行過渡性教育措施或其他適當措施之處所,得聲請少年法院核發勸導書,經勸導無效者,各該聲請人得聲請少年法院裁定留置少年於少年觀護所中,予以五日內之觀察。

English translation for reference only; the Chinese text prevails. Not legal advice.