Enforcement Rules of the Land Administration Agent Act Article 8

The term ‘within four years’ as referred to in the provision of Paragraph I of Article 8 in this Act means four years between the date when professional training is completed and the date when re-application for a practicing license is submitted.
中文原文 地政士法施行細則第8條
本法第八條第一項所稱最近四年內,指專業訓練之結訓日至重行申領開業執照之日在四年以內。

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