My Longevity Simulation - Chapter 635 0 Refining the Heart of an Immortal

That was the wild running speed that Li Fan had never felt since he practiced the mind-training mantra.

As if some special switch had been triggered, the operating efficiency of the Xuanhuang Heart-Cultivating Mantra was more than a thousand times higher than before.

If we say that Li Fan's previous self-experiment was a slow millstone pulled by a donkey.

But now, the Xuanhuang Heart Refining Mantra is like a roaring and roaring huge machine, and the countless real and illusory experiences that suddenly appeared in Li Fan's mind,

The content of this chapter is being updated...