Administrative Litigation Act Article 194

Where the administrative litigation is related to the protection of public interest and both parties fail to appear in the oral argument session without giving a justifiable reason, the administrative court may, on its own initiative, investigate the facts and enter a judgment without oral argument session.
中文原文 行政訴訟法第194條
行政訴訟有關公益之維護者,當事人兩造於言詞辯論期日無正當理由均不到場時,行政法院得依職權調查事實,不經言詞辯論,逕為判決。

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