"Yes."
Tang Xin continued, "Nearby, there is a portal connecting two dimensions. These Dragon-men came through that portal. However, not all Dragon-men can pass through, as the portal has a limit to what it can withstand.
If a Dragon-man who is too powerful enters, the passage between the dimensions will become unstable. What will happen then, no one can predict. That's why, despite the years, the Dragon-men's power has not been too formidable."
"Sister Xin, what about the summoning ritual you mentioned earlier?"
"That is the second way, apart from the portal," Tang Xin explained. "Using a special ritual and offerings, you can forcibly open the passage between dimensions. Think of it as a temporary portal.
This temporary portal can withstand stronger Dragon-men, allowing more powerful ones from another dimension to come through. Those Dragon-men we see now must be performing this ritual."
Hearing this, the other women were stunned.