Eclipsed by Shadows, Guided by Light Chapter 364

According to Alexander Su's exploration experience, there are three prerequisites for entering the Jingtian Sect ruins:

The first is to use old objects in the mirror as a medium; the second is to learn mirror-related skills; the third is to have the means to freeze the image in the mirror.

As for the time and place, Youyue told Alexander Su that it doesn't matter what time it is, as long as the place is within the Qingcheng Cave Heaven, any place will do.

According to this statement, Alexander Su and his friends can actually enter from the main peak. In theory, they should appear directly at the main peak of the mirror world, which is the core area of   the Jingtian Sect in the past.

That should be the source of all abnormalities, and the most precious things should also be there.