This cluster of blood mist had no corrosive properties whatsoever. What it possessed was an exquisite ability to infiltrate. The formation should have been self-contained, unresponsive to the outside world.
If there were any reactions, the entire formation would inevitably fluctuate, perhaps even issue a direct warning. However, the technique executed using the Blood Touch method broke forcefully into the formation.
Ironically, these formations showed no hostility towards the arrival of the blood mist. They treated it as if it were ubiquitous elemental energy.
Chen Fei remained composed as he watched the blood continually flow from his arm. When using the Blood Touch technique without having fully learned the complete Blood Origin Technique, it did impose a certain burden on the body. After all, there was only so much blood available.