Yi Tianyun carefully observed the giant rock before him. Besides the iron chains binding it tightly, there was nothing else around. The secret chamber here was simply sealed off using some decent concealment Divine Runes.
This way, those with weaker Spiritual Sense wouldn't be able to easily investigate the situation inside, which protected the secret here.
However, as time went on, if a Spirit King Stage expert were to investigate carefully, they would still be able to discover it. Then they would find this place and dig it up.
Besides releasing Yang Qi, the giant rock before them emitted a much more ominous aura—a terrifying power that was released mixed in with the Yang Qi.
Just sensing this aura made their legs feel weak. Even the Mansion Master felt a degree of powerlessness and fear.
Her cultivation was only at the Core Formation Stage, so she certainly couldn't withstand such an aura.
"So this is the Demon Seal... The ancestors really didn't lie to us..."
