Each entry gives the term in traditional and simplified form, its pinyin, the senses it carries in the classical corpus, the passages where it does real work, and how published translations have rendered it.
shèn jì wǔ fēn
How far out a year may be. The passage asks what happens when the qi above and the qi below do not match: 天氣不足，地氣隨之；地氣不足，天氣從之 — and then says how much of the difference will be visible. 大要曰：甚紀五分，微紀七分，其差可見. Read with the sentence before it (故上勝則天氣降而下，下勝則地氣遷而上，多少而差其分，微者小差，甚者大差，甚則位易氣交，易則大變生而病作矣), the figure is a threshold: the discrepancy is always there, and only when it grows does it turn into disease. It is the chapter's last word on degree, and the only place in it where a difference is given a number.
fā chén
The name Suwen 2 gives to the three months of spring, and the first of the four season names that structure the chapter. What the winter stored, the spring sends out. The rule the chapter draws from it is the rule for spring: sleep at night and rise early, walk in the courtyard, let the hair down and slacken the body, let things live and do not kill them — and if you do not, the liver is harmed and summer brings a cold change.
chū zhōng
The two halves of a single position of the qi: an initial thirty degrees and a remainder, and a middle that follows the same rule. They exist to divide heaven from earth — the initial is the qi of earth, the middle the qi of heaven — and they are why above and below are sought differently: 上下不同，求之亦異也. The chapter raises them in the middle of its measuring, between the step of sixty degrees and the standing of the year, and they are the smallest of the units it builds with.
jiàn qì
The qi that stands between — the one to the left and the right of the qi that governs, rather than the governing qi itself. The chapter gives it two lines and then a rule: 隨氣所在，期於左右, follow where the qi resides and look for it on the left and the right; and then 從其氣則和，違其氣則病, to follow its qi is harmony and to go against it is illness. What follows is the chapter's fullest statement of prognosis: not in one's place, shifting from place to place, losing the place one guards.