Yichuan YizhuanLine statement
The third line dwells at the culmination of cultural brilliance, situated between the two yin lines of the second and fourth, mutually adorning one another; this is the height of adornment, hence called 'graceful' (the particle ru being an expressive aid).
When adornment is at its height, it is radiant, glossy, and moist, hence called 'moistening.' When radiance reaches its peak, there is moist richness; as the Book of Songs says, 'The does and stags are sleek and glistening.' 'Persevering in rectitude brings good fortune.'
The third does not form a proper resonance with the second and fourth, but completes mutual adornment through Adjacency; hence it is cautioned that it must be everlasting, upright, and correct.
Adornment is mere embellishment, and the matter of embellishment is difficult to sustain as a constancy; therefore, only enduring rectitude brings good fortune.
The third and fourth mutually adorn each other, while below it is adjacent to the second; two yielding lines embellish one firm line, cross-adorning above and below, marking the height of adornment.