Because this was a reversed universe formation, it represented the inversion of yin and yang. Therefore, everything represented by the Eight Trigrams was reversed accordingly.
In the Earlier Heaven Bagua, Kun is in the north, whereas in the Later Heaven Bagua, Kan is in the north.
To break the formation, Si Ren first needed to know whether he was within the Earlier Heaven Bagua or the Later Heaven Bagua.
Chapter 1106