The Law of Ships Article 8

Unless otherwise specially approved by the R.O.C. government or for seeking shelter, any non-R.O.C. flag ship shall not stay in any harbor or port other than those announced as international ports by the R.O.C. government.
中文原文 船舶法第8條
非中華民國船舶,除經中華民國政府特許或為避難者外,不得在中華民國政府公告為國際商港以外之其他港灣口岸停泊。

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