Chapter 577

In the round hall stood several elders with gray beards, and in front of them was a huge round crystal.

On the crystal are the portraits of all the disciples participating in the xuanyang hall. Every move of all the contestants is in their eyes.

One of the elders in long gray clothes said with an unhappy face, "you just heard that this little girl is on purpose! I don't know how you take good care of this little girl."

"Elder song, you can see that only this little girl is the smartest among these people. She can avoid others several times and fight back. Isn't that the kind of person we need?" elder Zhu said with a smile.

"Yes... This encirclement and suppression is really tricky. We are familiar now. It is really difficult to arrange people to sneak into that place. So I decided to find a suitable person to sneak in. I think this little girl is more suitable than those in the previous group." another elder said.

However, elder song never had a good face. "It's just opportunism. Can a third-order martial artist turn the sky? If she really goes to the demon world, she's afraid she won't return!"

Other elders looked at elder song's gloomy appearance and didn't say much for a moment.

Tong Yan stood on the slate. Suddenly the slate sank and fell down all the time.

Tong Yan knocked on the ground curiously. Let alone, some things here are strange. They don't need electricity and can be like elevators.

The disciple standing aside thought she had no knowledge, and immediately said proudly, "this was invented by our beautiful elder martial sister Luo. Isn't it amazing? I saw you for the first time."

Tong Yan frowned and muttered, "it's not just the elevator. What a fuss."

She looked at the glittering things on both sides and wondered for a while. The disciple enthusiastically introduced: "these are energy stones. With these things, the spirit stone can start normally."

Tong Yan chuckled. The disciple looked at her and was immediately dissatisfied: "do you have any opinion on what elder martial sister Luo painstakingly studied?"

"You find two wheels, hang them on each other, and then punch holes around the stone plate. Then find a balance point. A piece of your energy stone is enough."

"Oh, talk big. An energy stone can do it?" the disciple sneered.

Tong Yan hooked his lips, "do you have paper and pen?"

The disciple took a piece of paper and pen out of the space ring and wanted to see what the noisy woman wanted to do. Tong Yan frowned. Without saying a word, he put a picture on the slate.

In fact, the principle of elevator only needs traction system and guidance system. The simplest point is the lever principle.

Tong Yan drew an extremely simple and understandable elevator drawing for the disciple, looked at him and said with a smile, "you can try it according to me and see if it's enough to see if it's an energy stone."

This energy stone acts as a power supply. One piece is enough.

"That's it?" the disciple looked at her suspiciously. Elder martial sister Luo studied it for several years, which made everyone greatly praised. Now someone even said that an energy stone could save them a lot of road building and drive up and down directly?

Is that possible?

"That's it." Tong Yan hooked his lips and suddenly the thief said with a smile, "I have many other good things here. You can try this first. If you feel good, if you want to build anything next time, just find me and I'll give you the best discount."