Act Governing the Issuance of the Central Government Development Bond for the First Phase National Freeway Construction Project in Taiwan Article 4

The interest rate on the certificates of each issue of the Bond shall be determined by the Executive Yuan. However, when an adjustment is made to the interest rate, the adjusted interest rate may not be lower than the one set at the time of issuance. Interest shall be paid once every six months from the date of issuance.
中文原文 中央政府興建臺灣區高速公路第一期工程建設公債發行條例第4條
本公債各期債票利息,由行政院定之。
但調整時,不得低於發行時利率。
自發行之日起,每六個月付息一次。

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