Act of the Central Trust of China Article 9

The Bureau consists of three supervisors delegated by the Ministry of Finance, the Directory-General of Budget, Accounting and Statistics of Executive Yuan, and the Ministry of Audit respectively. Each supervisor holds a term for one year and one of the three supervisors is appointed by the Ministry of Finance as Permanent Supervisor.
中文原文 中央信託局條例第9條
本局置監事三人,由財政部、行政院主計處、審計部各派代表一人充任之,任期一年。
並由財政部指定其中一人為常駐監事。

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