Destiny! Every time Zhou Feng changed his destiny, the faster the skill panel would be charged.
This was his speculation.
If he was quiet and didn't disturb anyone, his destiny would be less affected. Ergo, the slower the progress bar would charge.
And every time Zhou Feng encountered something and changed something in his way, the progress bar increased rapidly.
As for why the consumption of Spirit Stones could speed up the progress bar, Zhou Feng had a speculation as well.
The Spirit Stones had many uses, but he consumed them for his progress bar.
This indirectly changed a person's destiny.
Changing one's destiny allowed the progress bar to be charged.
'This can even explain why I get a chance to draw a passive skill every time I break through.'
The more Zhou Feng thought about it, the more he felt this was the case.
Because as his realm increased, the impact on this world would be greater.