C429 Earth-shaking

For others to advance from the middle stage of the Nascent Infant to the late stage of the Nascent Infant, it would at least take them ten days to half a month. Xiao Yun was actually walking on the Heaven Stairway and broke through just like that, was this a human's Inherent Skill?

What was even more astonishing was that after Xiao Yun broke through, he did not stop. He continued to walk forward