Administrative Litigation Act Article 134

Even if a party has admitted to the facts alleged by the opposing party, the administrative court shall consider other necessary evidence on its own initiative.
中文原文 行政訴訟法第134條
當事人主張之事實,雖經他造自認,行政法院仍應調查其他必要之證據。

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