Qin Yun flew into the deep passageway, which looked booby-trapped with array formations at a glance. However, none of them were activated.

"I entered by powering the Dao talisman, after all. The Grotto-heaven's array formations are ignoring me." Qin Yun looked at everything with a look of excitement. "If that mysterious Old Master Chu were to enter, he will likely fall prey to the Grotto-heaven's repeated assaults."

It was a Grotto-heaven left behind by an expert.

If one followed the rules of the Grotto-heaven's owner, it would naturally be smooth-sailing the entire way.

If one forced their way in, they would naturally suffer the wrath of the owner's traps.

Hum!

With a thought, Qin Yun released his Dao domain!

"Boom!"

The Grotto-heaven's array formation was extremely suppressive, but Qin Yun's Dao domain far exceeded what it was fifteen years ago. In terms of realm, he was in no way inferior to a peaked third Firmament Essence Soul realm existence. He could match the Grotto-hea