Chapter 551: Attack on Rock Fortress City

"BBOOOOOMMMM~!"

A big explosion was enough to attract everyone's attention, as Tianlong Yun immediately run out of the Clan Lord Mansion, and appeared outside to see what was going on.

If one went just with the noise then it was quite the attack, but the reality was that it was more of a smoke show to attract attention.

The powerhouses that had participated in the attack were all in the first level of the Boundary Ascension Realm and weren't that powerful in the first place.

10 years ago, powerhouses of the Great Boundary Ascension Realm hadn't been able to leave a scratch on the barrier surrounding Rock Fortress City, so these guys were even less able to.

Still, the sound effect was quite good and managed to turn the place into an uproar. After so many years of peace, and seclusion Rock Fortress City was being attacked once again.