"The Qi mechanism of the Grotto Heaven has changed, from the outside to the inside, and the Qi mechanism within the Grotto Heaven has also followed suit."
"This change is very slow, so you might not have noticed it!"
Yang Zhenshan continued to explain.
"Qi mechanism change!" Qingyuan Fox Venerable fell into contemplation, recalling the Qi mechanism of Qingyuan Cave Heaven from a thousand years ago, but she couldn't find any basis for the change.
This is normal, one because the time is too long, matters from a thousand years ago, even for Qingyuan Fox Venerable as a Demon Venerable, cannot be remembered clearly, and two because the fluctuations of the Qi mechanism change are very small, even when compared to a thousand years ago, the difference is not very large.
Yang Zhenshan estimated that the Qi mechanism change of Qingyuan Cave Heaven did not start a thousand years ago, it should be even earlier, possibly several thousand years ago.
