Direct Officer
Also called Zhèng Guān, the Proper Officer
A chart describes tendencies in a traditional system. It cannot decide health, money, law, marriage or children.
In the classical sources
阴阳配合，相制有用，成其道也。
Yin and yang are matched, the restraint has its use, and so the way is complete.
三命通會 卷五
About this relation
The name is a government job title, and 正 means proper. Its stem is the one that controls the day master from across the yin and yang divide: for yin earth 己, yang wood 甲 is the Direct Officer. 三命通會 卷五 ranks it first of the six formations and allows it a single appearance.
三命通會 carries a dry aside in its explanation: 官 and 煞 share one root, because the court that gives you a post owns you until the coffin lid closes, and people who dream of a coffin are said to receive office. The 淵海子平 chapter adds that 阴见阳 is 官 and 阳见阴 is 鬼, ghost, without saying more about the split, and its table attaches 官鬼 to the pair 甲 and 庚. In either place 鬼 names the stem that presses on the day master and concerns no spirits.
Procedure gets more attention here than fortune. 淵海子平 tells the reader to look at the month first, calling it the main rope of the chart, and warns that clashes and punishments upset this stem. It closes with a warning against holding to one line of reasoning, since a hair's error grows to a thousand miles. Modern popular books turn this stem into career, authority and reputation, while the passages speak of it in the language of the court.
Where this text comes from
The quotation and the attributed statements follow the Wikisource texts listed here. The relation rule is the method used by the calculator.
The English name follows common modern usage. The wording here is our own plain summary.