"Hmm." Lin Chen nodded, ruthlessly, let go of Song Qingyu's little hand, and began to search carefully in the room.

Song Qingyu also began to look carefully in the room, and the two acted separately, refusing to let go of even the corners.

Lin Chen suddenly found that there were two buttons on the back of the bookshelf, and he didn't know what they were.

Just when he was puzzled, he suddenly remembered a scene, he remembered that he seemed to have seen something behind this bookshelf that day, it was all a few years ago, and it was still a little difficult to think about it now, Lin Chen frowned, thinking desperately.

He remembered that he was holding a dozen materials, and he saw behind an old man what button the old man had pressed, and he really couldn't remember what it was, two buttons, and he didn't know what he should press now.

Song Qingyu also noticed the scene here, walked over, and asked, "Did you think of anything?" ”

"It seems like this is the right place, but I always feel that something is wrong." Lin Chen frowned and hesitated to say such a sentence.

"Something is wrong?" Song Qingyu followed Lin Chen's line of sight, and the two buttons were lying quietly behind the bookshelf, both of which were the same color, "Are these two buttons?" ”

"Yes." Lin Chen nodded, "But I really can't remember which one to press." He said slowly.

"It's okay, think slowly." Song Qingyu said.

This should be the mechanism.,Fortunately, there's one in this room.,But two mechanisms.,It's really a little confusing.,It's not appropriate to press either.,If one of them is wrong.,Maybe there will be an alarm.,Attract those people too.。

"Hmm." Lin Chen nodded, knowing that this matter was not sloppy, and now he could only think about these things by himself.

He meditated, immersed in thought.

At this moment, Song Qingyu seemed to hear a sound of footsteps outside, as if someone was coming.

She hurriedly used her spiritual power to test it, and she felt that a person from the Yuan Infant Stage and a Foundation Building Stage were rushing this way, and the direction in which the two of them came was the room they were in.

Could it be that something happened to Xia Mingyi? Or who was alarmed?

Song Qingyu didn't dare to stay, subconsciously took Lin Chen's hand, and set up a stealth technique on the two of them.

The two hid in a corner.

Lin Chen felt the warmth of his palm, was stunned for a moment, and subconsciously glanced at Song Qingyu.

"Shhhh Song Qingyu said, looking at the door vigilantly.

The footsteps were getting closer and closer, and Lin Chen also heard something, held his breath and looked at the door vigilantly with Song Qingyu.

"Senior, I'm really sorry to ask you to come over today, but I'm really upset if this question is not solved."

"It's okay, you're going to have to touch these things sooner or later, and it's time for you to know now that you're thinking about it."

The conversation outside the door was getting closer and closer, but Song Qingyu chuckled in his heart, and glanced at Lin Chen, both of them seemed to think of something.

This voice seems to be Renfei......

But neither of them spoke, the door was pushed open, and an old man walked in with Renfei.

Song Qingyu and Lin Chen stared at the movements of the two of them tightly, and even remembered a little detail in their hearts, Ren Fei came this time, just so that they could see which button these two would press, and Lin Chen also put a stone in his heart.

As soon as the old man entered the door, he felt an unusual aura, and he seemed to glance around the house with some surprise, but found nothing, and made an unfathomable expression.

"Senior, what's going on?" Ren Fei saw that the old man suddenly stopped moving, and asked suspiciously.