Land Act Article 46-2

Whenever cadastral survey is repeated landowners shall set up border marks and be present on site to identify the boundaries according to the time limit prescribed in the notification issued by the Land Office. If the landowners fail to set up border marks or to identify the boundaries within the said time limit, the cadastral survey shall be carried out according to the following order of precedence:(1)Boundaries of adjacent land.(2)Boundaries identified by current users.(3)Boundaries with references to old cadastral maps.(4)Local custom.The provisions of Paragraph two of Article 59 shall apply mutatis mutandis, when there is any dispute among landowners arising out of the setting up of border marks or the identification of land borders.
中文原文 土地法第46-2條
重新實施地籍測量時,土地所有權人應於地政機關通知之限期內,自行設立界標,並到場指界。
逾期不設立界標或到場指界者,得依左列順序逕行施測:
一、鄰地界址。
二、現使用人之指界。
三、參照舊地籍圖。
四、地方習慣。
土地所有權人因設立界標或到場指界發生界址爭議時,準用第五十九條第二項規定處理之。

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