Code of Civil Procedure Article 472

The appellee may submit answers and additional pleadings to the court of third instance before a judgment is entered. The appellant may also submit additional pleadings with regard to the reasons for appeal.The court of third instance may serve the pleadings provided in the preceding paragraph upon the opposing party if it considers it necessary to do so.
中文原文 民事訴訟法第472條
被上訴人在第三審未判決前,得提出答辯狀及其追加書狀於第三審法院。
上訴人亦得提出上訴理由追加書狀。
第三審法院以認為有必要時為限,得將前項書狀送達於他造。

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