Administrative Officer (Hong Kong)
The Administrative Officer (AO) grade (Chinese: 政務主任) is a high-ranking civil service grade in the Government of Hong Kong. == History == === Colonial era (1862-1997) === The colonial Hong Kong civil service was created in the image of the British civil service, with administrative, executive, and clerical grades.
Source: Wikipedia — Administrative Officer (Hong Kong) (CC BY-SA 4.0)