Heart-slaying Demon, Liu Hongzhao shared this method with Lin Yaoyao and Qi Xiangyun.
The Heart Demon itself is a special kind of demonic thought. If one can slay it and plunder everything from the Heart Demon, it becomes a unique way to grow stronger. Even fighting with the Heart Demon is akin to the Blood Asura's way of battling to sustain oneself through battle.
The only thing missing in this process is the enhancement of blood energy.
But that's not important; the source of blood energy is available from Zheng Yichen.
The effort required to digest even a drop of Zheng Yichen's blood is immense, so why should a generated Heart Demon be able to attack their mental defenses using Zheng Yichen?
To belittle them as too weak and useless?
