It was a raised triangular switch, embedded in a pitch-black stone block in the wall, but slightly reddish, so it was spotted by the attentive Ai Xingyan.

"As a veteran explorer, I think you've found the crux of the problem." Byron quipped.

Then, under his gaze, Ai Xingyan stepped forward and gently turned the switch, but only a creaking sound was heard, and the thick wall did not move at all.

Am I getting it somewhere wrong... Ai Xingyan looked at the crystal-like three-edged switch, and his mind was a little confused for a while.

At this time, Byron gently patted Ai Xingyan's shoulder and reminded softly.

"Did you notice, there are three mirrors in this hall?"

Looking at his flickering pupils, Ai Xingyan actually felt a trace of palpitations.

However, when he followed the gesture of the elven prince, he found that everything was exactly as Byron had described.

I saw that there were really three transparent crystals on the roof, the left wall, and the ground, and each one was emitting a crystal light.

"You're absolutely right, but are we going to let them stuff more?" Ai Xingyan asked.

"It's not like that." Byron flicked his fingers: "All it takes is some light." ”

As soon as he finished speaking, a white ball of light condensed into his fingertips, and then he moved his steps, and soon came to a position that seemed to have been predetermined.

"It's decided, I'll help you to the end this time." Byron suddenly took a closer look at the distribution of mirrors: "To solve the mystery in front of you, you need some knowledge of space, as well as magic that can emit light. ”

Ai Xingyan was surprised.

"Are you going to connect the mirrors with a beam of light?"

"Well, that's right."

Byron said with interest.

"Three mirrors, just three specific locations, like the three stars of the Eternal Constellation."

"All you need to do is send light to one side of the roof, then reflect it off the other two sides at exactly the same angle, and then turn into a red triangular trap to trigger the spell of the seal and open up something unknown."

"So, it's all in your calculations?" Ai Xingyan asked.

"Of course, in the Kingdom of Ilil, this problem of specular reflection is just a piece of cake for us."

"Well, the angle has been calculated, and now, the time has come to witness the miracle."

The white beam of light from Byrons' fingertips shot out instantly, reversed on the mirror surface of the roof, and then shone on another mirror, and finally, it actually shone on the red mechanism.

In Ai Xingyan's eyes, the bizarre light formed a strange picture.

Instantly, the triangular mechanism rose red in the light, and then, like a jewel in the darkness, the entire hall was illuminated.

Ai Xingyan stared at everything in front of him in disbelief.

"Soon, something strange will happen?"

Under his gaze, the originally solid wall instantly split in half, and a rumbling sound sounded, and a bottomless road appeared in front of their eyes.

"Get out of here and we'll get the truth." Byron said, as something seemed to roar wildly in the deep darkness.

The two walked slowly, and their figures disappeared.

As the position continued to deepen, Byron and Ai Xingyan held their minds and continued to move towards the core of the castle.