Furrowing his brows, Di Tou thought about it, and figured that shouldn't be the case.
Rather it should be that the devouring and breaking effects of his Qi should have gotten stronger when he stepped into the Foundation realm.
Standing up and stretching a little while mulling over the details of the slips, Di Tou walked over to the table and noticed that the holes he had made after the Foundation realm did seem ever so slightly bigger than the holes from before, but only by a marginal amount, so he hadn't noticed earlier.
But now that he was paying attention, he could confirm it. The destructive and consuming properties of his Qi had gotten a bit stronger.
Luckily for him, Di Tou felt like had a decently good idea as to how to use Spiritual Sense already, he only had to confirm his thoughts, and if all worked out, he wouldn't have to worry all that much about his Qi not working well with spiritual items anymore!