But just like this feeling, unreasonably, a big tree emerged in Zhen Jin's heart, or was it a stone under the tree.

Zhen Jin immediately flew over to verify that his feeling was correct!

"The eyes of bat monkeys do not have night vision function. But when they fly at night, they will continuously emit ultrasonic waves of different frequencies. When these ultrasonic waves encounter things, they will be reflected back and allowed to be received by bat monkeys. Bat monkeys can distinguish these

Echoes of different frequencies, and then dodge flexibly without hitting any obstacles." Cang Xu's words reappeared in Zhen Jin's mind again.

Zhen Jin immediately realized one of the key points - different frequencies!

So, he continued to emit ultrasonic waves and control the vocal cords. The frequencies of the ultrasonic waves were different.

The ultrasonic waves returned and were successfully received by Zhen Jin's ears.

Because of the different frequencies, needle gold is easily distinguished.

As a result, the surrounding environment unfolded in his mind, like a painting outlined with a white pen on a dark canvas.

As Zhen Jin continued to make sounds and receive ultrasound waves, the canvas area in his heart expanded rapidly, two hundred meters, five hundred meters, eight hundred meters...

Things on the canvas also change from blurry to clearer.

A sense of control arises spontaneously.

What comes with it is a sense of security.

I know everything here, I'm aware of all the changes, and I'm aware of everything within 800 meters.

Zhen Jin's heart became more and more excited.

Although he had used lizard eyes, the visual range of thermal imaging was much smaller than that of hearing.

Zhen Jin has been counting the time in his heart.

Now that there are more people in the team, he can't go out alone for too long.

After gathering his emotions, he returned to the previous place, changed back to his human form, and got dressed.

Following the original path, he returned to the camp.

"Lord Zhenjin, you are back!" The guards saluted him one after another.

Zhen Jin encouraged them and returned to their tents.

He lay on the shop floor, but could not fall asleep for a long time.

The crooked flight was certainly exciting, and the ultrasonic hearing experience was also wonderful, all of which left him with endless aftertaste.

When he returned to his human form, he could only walk on the ground with his feet. He could not hear more beautiful sounds, let alone use his hearing to detect things within a kilometer around him.

This is like a bird suddenly having its wings taken off, or a normal person suddenly going blind.
Chapter completed!