The Agricultural Wholesale Market Management Regulation Article 5

While the market operating subject receive operating permit, it shall begin to operate within 6 months. If it is unable to begin operating in the specified period, may apply to the municipal, county/city supervising authorities for postponement with justifiable reasons but limited to one time only.
中文原文 農產品批發市場管理辦法第5條
市場經營主體取得經營許可證後,應於六個月內開始營業。
但有正當理由不能於規定期限內開始營業者,應報經直轄市、縣(市)主管機關核准酌予延長,以一次為限。

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