Code of Civil Procedure Article 96

Where a plaintiff has no domicile, office, or place of business in the R.O.C., the court shall, by a ruling on motion by the defendant, order the plaintiff to provide a security for the litigation expenses. The court shall do the same when such security is found to be inadequate or not correctly provided during the process of the proceedings.The provision of the preceding paragraph is not applicable in the case where either the portion of the plaintiff's claim is not disputed by defendant or the plaintiff's assets in the R.O.C. are sufficient to compensate the litigation expenses.
中文原文 民事訴訟法第96條
原告於中華民國無住所、事務所及營業所者,法院應依被告聲請,以裁定命原告供訴訟費用之擔保;訴訟中發生擔保不足額或不確實之情事時,亦同。
前項規定,如原告請求中,被告無爭執之部分,或原告在中華民國有資產,足以賠償訴訟費用時,不適用之。

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