中郎將

Etymology

 * The position of 中郎 (the feudal equivalent of a Secret service agent, i.e. responsible for palace security) was established in the Qin Dynasty (221 - 206 BCE). Later, in the Han Dynasty, 中郎 were assigned to one of five different squads (官). Each one of these squads had its own leader, which was called 中郎將 (commander of the palace guards).

Noun

 * 1)  position title within the old imperial system; a commander of the palace guards