Aircraft Flight Operation Regulations Article 38-1

The cabin crew shall be given a rest period of no less than 9 consecutive hours at the end of 8 hours of flight duty period; 12 consecutive hours shall be given when the flight duty period extended but no more than 12 hours; 20 consecutive hours shall be given when the flight duty period extended but no more than 16 hours; and 24 consecutive hours shall be given when the flight duty period exceeds 16 hours.At least 30 consecutive hours of rest period shall be given during any 7 consecutive days.
中文原文 航空器飛航作業管理規則第38-1條
客艙組員飛航執勤期間未逾八小時,於執勤完畢後應給予連續九小時以上之休息;飛航執勤期間超過八小時未逾十二小時,於執勤完畢後應給予連續十二小時以上之休息;飛航執勤期間超過十二小時未逾十六小時,於執勤完畢後應給予連續二十小時以上之休息;飛航執勤期間超過十六小時,於執勤完畢後應給予連續二十四小時以上之休息。
連續七日內,應給予連續三十小時以上之休息。

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