Important and busy people in all societies rely upon aides, assistants, staff associates, factotums, lackeys and personal servants, and it is no different in China. What is distinctive is the diffuse and all-purpose character of the Chinese mishu, literally “secret book” but usually translated as “secretary.” A mishu, however, is actually someone with both far broader and more personally intimate responsibilities and powers than this term suggests. Any Chinese shouzhang (leader or head) of significance will have numerous mishus, personal and/or organizational, in his service. In China's political arena there are around one million people who claim the title of mishu, and who, in shielding, guiding and doing the bidding of their masters, give a distinctive character to the political process. Mishus operate with considerable authority not just at the pinnacles of power, as aides do in most countries, but from top to bottom of both the Party and state hierarchies. Therefore, to understand how political relationships operate, how communications flow and how authority is asserted in the ranks of Chinese officialdom it is necessary to appreciate the ubiquitous role of the mishu.