章 978: Chapter 564: Battle for the Mine

The flying boat advanced through the passage, as Ye Feng once again utilized Spatial Seal and Spatial Concealment, two types of rules, to hide himself.

Previously, after entering the War Fortress, such oppression definitely didn't exist; after all, the oppression was meant for outsiders, not those within.

Now it was time to disguise himself again.

Ye Feng could sense that, as the flying boat approached the exit, the oppressive force pervading the entire Air Domain was attacking once more, slowly but surely.

And when compared to the outer regions, its intensity had at least tripled.

This meant that even if he undid the seal, with the full resistance of three Supreme Rules, his support time would definitely be even shorter.

At most, it would be around 30 seconds.

The good news was, if there were enemies, the amount of time they could withstand would also be significantly shortened, even if a True God Strongman came, it was doubtful they could last much longer either.