I Am Cultivating Immortality With Science

Luo Hong stood in front of the Yellow Maple Valley Mountain Gate, at this moment he had to admit the fact that he had traveled to “Mortal’s Journey To Immortality”.
Pushing the glasses that no longer existed, Luo Hong said decisively: “I am a fourth-grade pseudo-spiritual root like Old Demon Han, but I don’t have a vial. It seems that the only way to go is scientific cultivation!”

Why is there a bottleneck every four layers during the Qi refining period?

How to maximize the probability of foundation building?