Ordinary cultivators needed at least five thousand years to advance from the peak of the void refining realm to the early stage of the fusion realm.
Similarly, geniuses needed two to three thousand years to achieve the same breakthrough.
However, Shen Xu was not an ordinary genius.
Even before he refined a rootless colourful water lily petal, he needed less than two thousand years to advance.
That said, talent was not everything.
Although Shen Xu had boundless talent and matchless cultivation speed, he had also refined a nine-colour lotus and other meridian and dantian broadening treasures.
As a result, he required a dozen times more qi than ordinary void refining realm cultivators to advance to the fusion realm.
Accumulating this qi was not easy.
Fortunately, the double had Xiaolei and billions of spirit stones.
After retreating for fifteen hundred years, he finally felt the barrier and could break through at any time.
However, Shen Xu chose not to advance.
