Code of Civil Procedure Article 25

A court obtains jurisdiction over an action where the defendant proceeds orally on the merits without contesting lack of jurisdiction.
中文原文 民事訴訟法第25條
被告不抗辯法院無管轄權,而為本案之言詞辯論者,以其法院為有管轄權之法院。

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