李公蘊
In 1010, Lý Thái Tổ changed the 10 "đạo" subdivisions into 24 "lộ". The "lộ" was possibly subdivided into "châu" (in mountainous areas) or "phủ" (in the lowlands). The "châu" and "phủ" were further subdivided into "huyện" and "giáp", and under them "hương" and "ấp".