The Organization Act of the Bureau of Cultural Heritage, Ministry of Culture Article 3

The Bureau shall have one (1) Director General, whose position shall be at the thirteenth grade senior-level civil servant, and may be hired in the same manner as a principal or a professor of a junior college or higher if necessary; and two (2) Vice Directors General, whose position shall be at the twelfth grade senior-level civil servant, and may be hired in the same manner as a professor if necessary.
中文原文 文化部文化資產局組織法第3條
本局置局長一人,職務列簡任第十三職等,必要時得比照專科以上學校校長或教授之資格聘任;副局長二人,職務列簡任第十二職等,其中一人必要時得比照教授之資格聘任。

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