In the blink of an eye, fifty years had passed.
Just as Wang Wu had guessed, once the Heaven and Earth Needle surveying problem had been solved, everything else ceased to be a problem.
Those prisoner workers no longer stirred up any trouble, nor did any other factions come to provoke them.
Wang Wu only came out twice every two years—once to help speed up construction, and once to help with surveying.
Of course, he had not truly followed Frost Lord's demand that each one had to be completed within two years. Instead, he stretched the timeline to two and a half years. The cost would drop somewhat, though not by too much.
Thus, over the past fifty years, Frost Domain had actually built only twenty-one Heaven and Earth Needles.
Even at this pace, they ranked in the middle among the eighteen construction teams. Only the five strongest teams at the very top could build one in roughly two years.
Wang Wu felt that this was quite good.
And he had also spent the happiest cultivation years of his life.
It was safe enough, no one dared disturb him, and most importantly, there was more than enough spirit energy.
Over the past fifty years, while using the convenience of his position to save Frost Lord eight trillion points of spirit energy, he had also casually skimmed nearly ten billion points for himself.
It felt ridiculously good.
But it was not as though those ten billion points of spirit energy had greatly improved him, because they had basically all been used to patch holes.
Among them, merely repairing the hidden damage in the Water Spirit Pill, Wood Spirit Pill, and Gold Spirit Pill had cost him two billion points of spirit energy.
Since he now had level 19 Spiritual Essence Micro-control,