Enforcement Act of the Part of Rights In Rem of the Civil Code Article 11

A person, who picked up the lost property, the floating property, or the sunken property before the coming into force of the BOOK of RIGHTS in REM of the CIVIL CODE and fulfils the conditions of Articles 803 and 807, acquired the rights as provided in Article 807 of the CIVIL CODE, as from the date of the coming into force of the BOOK of RIGHTS in REM of the CIVIL CODE.
中文原文 民法物權編施行法第11條
民法物權編施行前,拾得遺失物、漂流物或沈沒物,而具備民法第八百零三條及第八百零七條之條件者,於施行之日,取得民法第八百零七條所定之權利。

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