Six at the beginning counsels a querent to take unusual trouble over the foundations of something heavy. The image of white mao grass laid beneath objects placed on the ground describes precaution that would look overdone if the load were ordinary, and the reading is that in a time of excess it is not overdone at all. The verdict, no error, is modest by design. Nothing is promised here beyond the absence of fault, and the absence of fault is exactly what a weak bearing under a great weight is trying to achieve.
The position accounts for the caution. A yielding stroke stands in an odd place, incorrect by the standard rule, at the foot of a hexagram whose whole difficulty is that too much weight rests on ends unable to carry it. Somebody drawing this line is usually at the start of an undertaking larger than their present footing justifies. The counsel is not to shrink the undertaking, which the hexagram nowhere recommends, but to spend disproportionate attention on whatever the whole thing is going to stand on.
When the line changes, the lower trigram Xun becomes Qian and the figure becomes Breakthrough, King Wen 43, a decisive resolution carried by strength throughout. Read from where this line stands, that is what careful preparation at the bottom eventually permits. The soft place is made firm first, and only afterwards does the situation become one that can be forced.