High difficulty challenge (2)

Then, Xia ruofei steadily carved the second, third, fourth ...

He maintained a constant rhythm. At first, the difficulty of the formation patterns was relatively low, so he didn't intentionally speed up. As the number of formation patterns increased, the difficulty also began to gradually increase. However, his speed did not slow down, and he always maintained a rhythm that he felt was the most comfortable.

Time passed by.

More and more formation patterns were left on the Jade, and they became more and more complicated.

Ordinary people's eyes couldn't see the array patterns, but if a cultivator used his mental power to observe this Jade, he would see that the dense array patterns inside were spreading in all directions, and an extremely complicated pattern was slowly taking shape.

One thousand, two thousand, three thousand ...

Unknowingly, Xia ruofei had been in this position for a few hours. The number of formation patterns on the Jade had reached more than 4000.