The Compulsory Enforcement Act Article 80-1

Where the floor price of the auction of an immovable property is insufficient to repay the priority claims and the costs of compulsory enforcement, the enforcement court shall notify the creditor of it. Within 7 days after the creditor receives the notification, he/she may prove that the selling price of the immovable property is likely to be sufficient or designate an auction floor price that exceeds the total amount of the claim and the costs, and represent to pay the costs if the auction is not concluded, and petition for an auction. Where the creditor does not make the petition within the specified period, the enforcement court shall revoke the attachment and return the immovable property to the debtor. Where the auction is carried out upon the creditor's petition pursuant to the preceding paragraph yet is not concluded, and the creditor refuses to accept the property, the enforcement court shall make a public announcement stating that those who are willing to purchase the immovable property may bid in accordance with the auction terms within three months. The enforcement court may approve the bid after consulting the creditor's and the debtor's opinion. The same applies when the creditor is willing to accept it. Where no person bids or accepts within the specified period, the enforcement court shall revoke the attachment and return the immovable property to the debtor. Where the auction of the immovable property is petitioned by the mortgagee with higher priority or other priority claimants, the preceding two paragraphs do not apply.The provisions of paragraphs 1 and 2 pertaining to the revocation of the attachment and the return of the immovable property to the debtor do not apply when the immovable property has been sent for the compulsory administration or when the creditor has petitioned for the compulsory administration and the enforcement court deems it of merits.
中文原文 強制執行法第80-1條
不動產之拍賣最低價額不足清償優先債權及強制執行之費用者,執行法院應將其事由通知債權人。
債權人於受通知後七日內,得證明該不動產賣得價金有賸餘可能或指定超過該項債權及費用總額之拍賣最低價額,並聲明如未拍定願負擔其費用而聲請拍賣。
逾期未聲請者,執行法院應撤銷查封,將不動產返還債務人。
依債權人前項之聲請為拍賣而未拍定,債權人亦不承受時,執行法院應公告願買受該不動產者,得於三個月內依原定拍賣條件為應買之表示,執行法院於訊問債權人及債務人意見後,許其應買;債權人復願承受者亦同。
逾期無人應買或承受者,執行法院應撤銷查封,將不動產返還債務人。
不動產由順位在先之抵押權或其他優先受償權人聲請拍賣者,不適用前二項之規定。
第一項、第二項關於撤銷查封將不動產返還債務人之規定,於該不動產已併付強制管理之情形;或債權人已聲請另付強制管理而執行法院認為有實益者,不適用之。

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