The Northern Sea Vanishing Ocean of the Jiaolong Clan is intelligence that must be kept absolutely secret within our own clan and only known to the absolutely loyal and core members of our clan.
Even for close allies, it's impossible to let them know, otherwise... Just look at what Long Long and Long Hu obtained after entering the Fusang Secret Realm of the Golden Crow Clan, and you can roughly understand a thing or two.
After the entire Xuan Gui Clan had left, Long Long, assuming the identity of the clan chief, began to inspect and probe the construction techniques of the secret realm.
To create a secret realm, one must first interrupt the continuous space that is originally present here.
The Array Masters of the Jiaolong Clan used a kind of spatial cutting Formation called "Wu Cai".
This Formation has now been lost to time, and therefore the various secret realms that remain to this day are essentially all built in ancient times.
