Huamian's words made the national master raise his head. From His Majesty to a high-level priest, including the previous fairy Lanqiu Princess Ye Wei, he brought down many people, and almost all of them would arrive at the space where they are now to rest. However, Xia Huamian was the first person to see through the secrets in the space at a glance.

"What did someone tell you?" Seeing that Hua Mian was worried, the national teacher asked.

"It's really not. Before I came down, I didn't know what was like below. I just felt that the direction of the flue gas flow was wrong. It didn't sink down but rose to a higher place. If there was no external suction, it would be impossible to produce such a scene." Huamian tried not to involve too difficult explanations.

Everyone present could understand her statement, and most of the priests who could enter this layer of the cave knew about the secret in the cave. As the chef, he could understand that this layer was indeed beyond their expectations.

"Let's go, it's still a long way from the temple. We'll arrive within time," the national master said and stood up.

The group continued down the stone steps on one side. The difference is that Huamian had more things worth thinking about than before. What could continue to burn? When I entered that space just now, the stone pit was burning, which means that someone had prepared before they came, but according to the priest, the last time I entered was two days ago.

The burning time plus the black smoke and that strange smell... This is oil! Huamian suddenly realized that yes, it is only oil that can keep burning for a long time, and it is possible that it has a special smell.

I didn’t expect that in this world, natural resources are quite abundant, but if oil is really directed to the underground, it still ignites fire... "It would be too dangerous..."

"What's the problem with the chef Xia Zhangzhang? Danger? Is there something wrong with this road?" Hearing Hua Mian say 'Danger' the national teacher walking in front stopped and turned around and asked.

"No, no, no, this road is very ordinary, nothing strange."

"Since that's the case...what do you mean by danger?"

"Of course it refers to oil. The stone pit in the rest area just now leads to the underground, right? If you ignite the stone pit, don't you think... well...", how should you describe it? Hua Mian doesn't want to explain things too complicatedly, so she carefully uses the words.

"It won't happen what you think. The rumors about tinea oil among the people are terrible, but because of the scarcity of tinea oil. On the one hand, the merchants will exaggerate the effect in order to increase their prices, and on the other hand... they found that the cave owners here made improvements at the beginning of their construction."

"The original depth of the stone pit you saw just now was not as deep as it is now, but under the guidance of General Lu, it was drilled downwards and formed a stone pit. Later generations gradually filled it with tincture oil to keep the flames in the stone pits constant."

"General Lu? Could it be Lu Yan from Shangyang City?" Hua Mian was shocked. The impact of this Lu Yan on future generations was really beyond her expectations.

The national teacher nodded, "It's Lu Yan, General Lu, and Xia Zhangchu, as a chef, who knows so well about General Lu."

"I don't know much... I can't tell you anything about it. I just passed by a posthouse called Shangyang Post when I was on the mission to Beilin before. I heard the owner of the Lu Pavilion there say something."
Chapter completed!