The sealing techniques of Dadui are indeed useful, but there must be a significant issue with them.
Otherwise, by now, Dazhen, Dali, and Daqian would not be entirely without such sealing methods.
Besides, not to mention Dadui's proficiency in sealing, not even a trace of it has circulated outside.
Even someone like Yang, a former Dean of Langya Institute, only knows the words "Dadui Divine Dynasty" and a scattering of minimal intelligence.
If it were truly that beneficial and without major issues, the Three Divine Dynasties would not have uniformly ignored it; facing any matter, they are now confronting it head-on.
Furthermore, consider the complete disappearance of the Dadui Divine Dynasty.
In the southern part of the Wilderness, and even further south of that, within the territories that once belonged to the Dadui Divine Dynasty, not a single city's ruins remain.
