He started going deeper into the house, checking if the floor was hollow anywhere.
He closed his eyes and used his ability. Chewing on some improved Mana Cookies, he called on the wind and controlled them to enter the crawl along the flooring, trying to find whatever hole he could find.
The floor of such a palace was mostly made of marble-like stone, so it wasn't easy, but he thought there should still be openings if there was a hidden dungeon or something.
One of the most useful skills he awakened in the past few months was a skill called [Wind's Touch], which could allow him to have a 'feel' of whatever the wind touched (not in the perverted sense, but more of another 'sight').
His search, especially when his physical body was limited, would be expedited with it.
It consumed large amounts of mana, however, which was why he was only using it now.