- Description: Starting as Dai Viet, have 10 nations follow the Mahayana Faith by 1500.
- Difficulty Level:
|Achievement||The Princess is in this Castle|
|Description||As a country that does not start with a female heir, have a female heir while having a Castle in your capital (more advanced fort buildings do not count).|
|Notes||Easily done as Castile by waiting for the Iberian wedding event while not upgrading or deleting the capital fort. Note that Muslim countries cannot get female heirs.|