Four supports the central and correct Five above and is adjacent to the yielding and depraved Three below. Though firm and yang, it dwells out of proper place.
Three is yin and yielding, which yang naturally enjoys; hence Four cannot decide, deliberating without rest—meaning considering which to follow without reaching a resolution, unable to settle. What lies between two boundaries is called jiè (boundary/resolve); it sets limits.
When applied to land, the character adds the field radical, yet the meaning is identical; thus when a person holds fast to principle, it is called jiè. If one resolutely holds to correctness and swiftly distances oneself from evil, there will be joy.
Following Five is correct; pleasing Three is corrupt.
Four is close to the ruler's position; if it resolutely holds to correctness with firm resolve and shuns evil, it will gain the ruler's favor to practice the Tao, extending blessings and celebrations to all things, which brings joy.
For Four, gain and loss are not yet fixed, depending entirely on which it chooses to follow.