Even the Li Family could not avoid this.
Li Mingfang and the other upper echelons of the Li Family would probably gather to discuss this matter.
In the Essence Soul's illusory state, it was invisible to the naked eye.
Su Jingxing discovered this by accident.
When the Essence Soul turned incorporeal, it could not be seen with the naked eye. Ordinary perception abilities could not sense it either.
Even though the Blood Doppelganger's hearing was better than the main body's, there was one thing that could not be fixed.
That was soundproofing.
Once soundproofed and sound waves could not be transmitted, the secret ability would lose its effect.
The Essence Soul was different. It was even more magical than Blood Doppelganger which was an energy body.
As long as Su Jingxing wanted to, he could even listen to the entire city.