How to open the secret realm of the five oases?

The opening hours of the five oasis halls are as follows:

It first needs to be transmitted to the location of the domain.

Move to the front right at the entrance of the secret kingdom, and then you will find trapped faeries and stone tablets with changing patterns. We need to attack the stone tablet to make the pattern change in the same direction.

Pay attention to the faerie will make trouble, so we should stagger the position of faerie activities and quickly adjust the pattern of stone tablets.

After all the adjustments are completed, the faerie will be released into the light at the entrance of the Realm, and then we will move to the upper left of the Realm.

After defeating the relic mecha, release the faeries to open this secret field.