"What you are looking at now is a ruby. The energy inside is flammable and can be added to various fuel formulas to increase the flammability of the fuel." Seeing Lingchu staring at a kind of gemstone, Yan Chen started to popularize science.

"However, because the energy inside is unstable, you need to pay special attention when using it. It also needs to be stored separately, otherwise it may cause an explosion."

When Lingchu heard this, he understood why these red and black gems were placed alone under a glass cover.

Such a hot and difficult-to-control gem was definitely not what Lingchu wanted.

Lingchu's eyes immediately focused on the green gem next to it, which was also slightly black.

"Couldn't this be an emerald?"

Yan Chen nodded, "It is indeed an emerald. The abilities within this kind of gem are generally peaceful and have very little energy, so they are generally difficult to sell."

When Lingchu heard this, he blinked and pointed to the person next to him, "What is this kind?"

"The energy of sapphire also tends to be moderate, but it is a bit more energetic than emerald. However, it is said that it is more difficult to use than emerald. Researchers have not yet studied it. It is more suitable for situations where sapphire is used, so this kind of gemstone is generally sold

The quantity produced is not large either.”

Lingchu touched his chin and asked curiously: "Then, which gemstone is easier to sell?"

When Yan Chen heard this, he pointed to the side, "This kind of black gemstone."

Lingchu looked over and saw that there was indeed a row of translucent black gems on the shelf.

"Is this a black gemstone?"

Yan Chen hummed, "The energy in the black gemstone is not stable, but it is very powerful and can be used in many situations, especially in research laboratories where it is used in large quantities."

When Lingchu heard the words, he walked over and curiously stared at the black gem inside.

Apart from anything else, this black gemstone is so dark and translucent that it is quite beautiful.

At least on the surface, it looks a bit shiny.

and……

Standing here, Lingchu felt a faint yin energy.

It's not ordinary Yin Qi, not the Yin Qi belonging to the dead, but... like the breath of a vast, endless cemetery.

It's like, the breath that should be emanating from the land of death.

Somewhat similar...

The breath of the underworld that Lingchu imagined.

Did the underworld ever appear in this place?

Lingchu put his hand on the glass.

As soon as she put it on, Lingchu felt the Yin Qi lingering on her fingertips.

This kind of yin energy tends to be peaceful, and is not like the kind of yin energy from a dead person that will invade the human body unconsciously.

The Yin Qi in front of me is lingering outside the human body and does not invade.

Very measured and has a sense of boundaries.

Maybe it's because of the glass.

Lingchu hesitated and said: "Senior Yan Chen, can I take out this stone and have a look?"

"Can."

Yan Chen nodded and said hello to the mechanical attendant not far away.

The machine attendant immediately came over and pressed the button next to the cabinet.

The button immediately lit up with a red light and flashed several times.

The next second, the glass was put away little by little.

The waiter made a gesture of invitation, "You can pick it up and watch it at will, but be careful not to get your hands sweaty on it."

Hearing this, Yan Chen picked up the gloves lying next to him and handed them to Lingchu, "Sweaty hands will cause energy changes, so be careful."
Chapter completed!