There were many forbidden zones in the Nanhuang Continent but there was only one forbidden region.
That was the Phoenix Forbidden.
Its area was so large that it occupied more than half of the Nanhuang Continent. If it wasn't for the Truth Mountain Range separating it and some special reasons, the area of the Phoenix Forbidden would probably be even larger.
Even so, the range of the Phoenix Forbidden was still expanding in recent years. In fact, some areas had even spread on the Truth Mountain Range.
If this continued, the entire Nanhuang Continent would become Phoenix Forbidden in thousands of years.
The difference between forbidden zones and forbidden regions was their native races.
Forbidden zones were mostly inhabited by ferocious beasts, bizarre entities, or mysterious ruins and seals. However, there were no intelligent races in forbidden zones. Only the forbidden regions had the ability to give birth to races with intelligence.