Land Act Article 199

Any land on which tax has been reduced or remitted shall be taxed as usual, when the cause or circumstance which justifies such reduction or remission changes or disappears.
中文原文 土地法第199條
凡減稅或免稅之土地,其減免之原因事實有變更或消滅時,仍應繼續征稅。

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