Actually, the moment the Martial Dao Prime Body arrived, Su Zimo knew that given the intelligence of the Sect Master of the Academy, he should be able to guess.
He had no intention of hiding it either.
After his ascension, Su Zimo cultivated as though he was treading on thin ice and tried his best to hide this secret. The main reason was because the two true bodies had yet to grow.
If any side encountered danger, it might implicate the other side.
But now, the Martial Dao Prime Body had already cultivated to the Martial Domain realm and the Essence Martial Grotto-heaven was at greater mastery as well. Even with his bare hands, he could suppress quasi-Emperors!
There were not many people in the medium chiliocosm who could threaten him anymore.
Even if he encountered top Emperor experts and could not defeat them, he could make use of the Hell Suppression Tripod to return to Avici.