"The third one on the left."
The man under control spoke honestly.
Chen Fan picked it up and tested it on a few Vajra Rats. As expected, upon hearing the sound, they immediately went berserk, their strength increasing two or threefold.
At the same time, he also felt the rapid depletion of True Qi within his body; with just one blow, over a hundred thousand points of True Qi were gone.
No wonder this guy before, just a single blow, although he was a True Essence Realm Martial Artist as well, having a few hundred thousand points of True Qi in his body was already impressive.
What if he kept blowing? What would happen?
This thought suddenly popped into Chen Fan’s mind.
While dodging the attacks from the Vajra Rats, he continued to blow the whistle.
The True Qi within his body rapidly drained away.
In just three or four seconds, forty to fifty thousand points of True Qi were gone.
The sizes of those Vajra Rats grew from the previous three or four meters, swelling four or five times larger, almost reaching the size of Elite Level Vajra Rats.
Just at that moment.
"Boom!"
Several loud explosions.
The bodies of those Vajra Rats suddenly burst open.
The whistle sound abruptly stopped.
A flash of understanding appeared in Chen Fan’s eyes.
So that’s how it is.
As long as there is enough True Qi within him and the whistle keeps sounding, the strength of the fierce beasts hearing it will continuously grow and grow until they reach their limit, and their bodies can no longer withstand it and explode.
Chen Fan looked at an Elite Level Vajra Rat in the distance.
After spending tens of thousands more points of True Qi, this Vajra Rat, more than ten meters tall, directly grew to over thirty meters, almost comparable to those previous Commander Level Vajra Rats.
Chen Fan thought that this was the limit.
Unexpectedly, the Elite Level Vajra Rat’s size stubbornly grew to nearly forty meters before it explosively burst open.
The severe vibrations caused the ground to tremble several times.
"I just don’t know how to use this thing effectively."
Chen Fan frowned as he looked at the whistle in his palm.
Constant blowing could indeed be used to kill fierce beasts.
However, firstly, the range of the whistle’s sound was limited, not as vast as imagined.
Secondly, from the moment the whistle was heard to when the fierce beasts couldn’t withstand it and self-exploded, there was a considerable amount of time, and during this period, many variables could occur.
Thirdly, the consumption of True Qi was too significant. Even with his current six to seven million True Qi, he could only sustain it for a little over a minute.
For a martial artist, the importance of True Qi within the body is self-evident, like a gun without bullets, it’s just a piece of scrap metal.
On the battlefield, things change in an instant; no opponent would be foolish enough to give you time to recover your internal True Qi.
They would take advantage of your weakness to eliminate you.
"I can’t think of a use for it now; maybe I will in the future. Anyway, it’s indeed a good treasure, keeping it won’t hurt."
Chen Fan smiled and put the whistle back into his Spatial Ring.
"By the way, there must be a complete Beast Taming Technique in this guy’s Spatial Ring."
Chen Fan looked at the other’s Spatial Ring, which contained several Martial Arts Secret Manuals, all top-level martial arts.
This made Chen Fan a bit disappointed, but considering the guy’s earlier performance, he felt a bit relieved.
This guy relied on controlling fierce beasts and didn’t place much importance on his own cultivation.
Little did he know that these external things are always external; only strength within oneself is the true strength.
"Here it is."
Chen Fan quickly found the Beast Taming Technique.
What surprised him was that the cover of the Beast Taming Technique had the word "upper" on it, suggesting it was only half.
Chen Fan frowned and looked at the other person.