In secret, it was altered into a method for restraining the ancestor, passed down only through the direct lineage, to forcibly send it away if the ancestor refuses to leave.
Moreover, it can take advantage of some weaknesses in the ancestor and turn them into an advantage.
This actually aligns with the Negative Spirit dharma method.
From inviting the deity, worshipping ghosts, to gradually restraining and controlling the burden one carries, this is an inevitable process.
Of course, merely having this method is not enough; other conditions must be met.
For instance, to perform this method, it must be at a time when the family's ancestor is restrained by some powerful force.
One would then reap the benefits.
Previously, while the Meng family possessed this method, they never had the chance, only teaching it to Hu Ma at the time of their downfall.
