Building barriers with talismans.
The Li Family had used something similar, and Miroku had similar methods too (he used them against Yakan in the original).
But both Miroku's family and the Li Family had severely incomplete inheritances of the relevant skills.
They lacked advanced techniques.
For instance, even if the Li Family exhausted all its resources, it could only construct an intermediate defensive barrier, and one that would not last long.
Miroku's family could only construct low-level concealment barriers. Crucially, the person maintaining the barrier could not move around freely, or it would collapse without anyone attacking it. The only praiseworthy aspect was probably that their barrier techniques could be performed jointly with other mikos and monks, strengthening the barrier's effects.
Black Miko Tsubaki's school might possess a talisman inheritance capable of constructing powerful barriers.
After all, it could seal a great demon-level Giant Demon, and with Black Miko Tsubaki's help, it could erect a wide-area defensive barrier of intermediate blue grade... however he looked at it, this shrine's many inheritances could hardly be poor!
Without needing the owner to guide him, Li Xia spotted a tall tower in the woods on the Back Mountain from far away.
It was his other objective on this visit: the Treasure Pagoda.
Azure flames of magical power blazed around his entire body. He advanced toward the Treasure Pagoda step by step, erasing the shrine's many arrangements originally intended to target demons wherever he passed.
Only when he approached the foot of the tower did the sealing talismans on its main doors impede him slightly.
A very good outer seal.
It was far more sophisticated and powerful than Monk Shinsen's wedge seal.
"Open."
He pressed his right hand against it.
The talismans on the doors burned to ashes one after another.
Had a demon