The secret passage was eerie, like a tomb-robber's tunnel; short, narrow, and rudimentary, with the feeling of imminent collapse.

After traversing some distance and jumping down a cliff several dozen meters high, they finally reached a spacious area.

Upon arriving here, Lin Yifan felt refreshed, with a completely different sensation.

Because the spiritual energy here was rich, the space large, and there was no more oppressive feeling.

"Senior Brother! Is this the treasure you mentioned?" Lin Yifan asked.

This was just a relatively large underground cave; where was the treasure?

"Of course not, this is merely the entrance; the treasure lies in the cave mansion ahead!" Senior Ding replied while shining his flashlight into the darkness ahead.

Indeed, as he said, there was a large bronze door ahead.

Lin Yifan felt a sense of familiarity; wasn't this cave mansion similar to Qingxu Immortal's? Could it also be an Immortal's Cave Mansion?

Thinking of this, he couldn't help but feel excited, because he was the one True Master Qingxu was waiting for; could it be that the master of this cave mansion was also waiting for him?

Thus, holding onto his excitement, he cautiously proceeded step by step.

Senior Ding led the way, holding the flashlight.

When they reached the bronze door, he twisted the mechanism to open the door and entered the cave mansion.

Opening this door's mechanism had taken years of research; otherwise, with his power, he couldn't have broken through this array-prohibited bronze door.

"Junior Brother! Hurry in!"

Lin Yifan quickly followed, entering the cave mansion.

Instantly, the bronze door closed, returning to its original state.

"Senior Brother! How will we get out later?" Lin Yifan asked.

With the bronze door closed, he had no choice but to consider this.

"Don't worry, Junior Brother; if I can lead you in, I can certainly lead you out!" Senior Ding assured.

"Alright! I trust you, Senior Brother!"

For now, he could only trust Senior Ding.

Following Senior Ding's pace, Lin Yifan suddenly was startled by a bizarre scene.

Because the oil lamps on the tunnel walls suddenly lit up, mystical and ghostly.

"Senior Brother! Why did this happen? Could there be a mechanism, or might some zombies or ghosts emerge?" Lin Yifan asked nervously, hiding behind Senior Ding.

"Don't worry, Junior Brother! This is just a natural phenomenon controlled by the cave mansion's prohibition. The cave master couldn't possibly enter in the dark, right?" Senior Ding answered.

"Then why didn't the previous tunnel have this phenomenon?" Lin Yifan asked.

"I don't know; the previous tunnel walls also had oil lamps, and logically they should light up, but they just didn't. I don't know why." Senior Ding replied.

"Senior Brother! Could there be ghosts?" Lin Yifan suddenly felt scared.

Entering a cave mansion like an ancient tomb, he was really afraid, worried that some monsters or ghosts might come out to kill them.

"We are cultivators; are we still afraid of ghosts?" Senior Ding rolled his eyes, speechless.

"It's easy to say, but when you actually encounter them, it's a different feeling." Lin Yifan replied.

He wasn't afraid of ghosts, but if one suddenly appeared beside him with boundless power, he would be scared.

"Don't worry! I've entered this place over fifty times; no problem. Be brave and follow Senior Brother!" Senior Ding patted Lin Yifan's shoulder, giving him some courage and encouragement.

With Senior Ding's reassurance, Lin Yifan indeed felt more at ease.

Senior Ding had remained safe all this time; perhaps the cave mansion truly had no major issues.

After various twists and turns, two minutes later, Lin Yifan entered the first secret chamber.

It was empty; there was nothing.

"Senior Brother! Have you looted this secret chamber?" Lin Yifan asked curiously.

"I don't know; when I came in, the first secret chamber was empty." Senior Ding answered honestly.

"It seems someone has been here before!" Lin Yifan speculated.

"Maybe, let's keep moving!" Senior Ding urged.

After a few more minutes, they entered another secret chamber.

It was still empty; there was nothing.

"This secret chamber originally had some spirit stones, but I used them all." Senior Ding explained voluntarily.

Lin Yifan understood and continued to follow Senior Ding.

"Creaaak!"

Opening the third door, they entered the third secret chamber.

Here, Lin Yifan finally saw some useful items—medicinal herbs.

Actually, Senior Ding was also an alchemist, but he only made poisons, not other elixirs, so these non-poisonous medicinal herbs were useless to him.

"Senior Brother, why don't you want these herbs?" Lin Yifan asked.

So many precious medicinal herbs left here were truly a waste.

"Do you need these herbs?" Senior Ding asked in surprise.

"These herbs can be refined into many types of elixirs; why not take them?" Lin Yifan responded.

"Junior Brother, our Voodoo Sect only makes poisons; what use are these non-poisonous herbs?" Senior Ding asked.

With one statement, he revealed the truth, startling Lin Yifan, who quickly defended, "Ah? Senior Brother, don't you know that Master also refines antidotes while making poisons? These non-poisonous herbs can be made into antidotes, which are useful to us."

"But Master only taught me to refine poisons, not antidotes." Senior Ding continued to question.

"That was in the past; now, Master teaches me both poison and antidote refinement." Lin Yifan answered.

"Really? Then tell me the process of refining one antidote for a poison!" Senior Ding grew suspicious, starting to doubt Lin Yifan's identity.

Without hesitation, Lin Yifan immediately explained the entire process of refining the Intestine-Piercing Pill Antidote.

Seeing Lin Yifan's fluent explanation, and remembering the needed ingredients, Senior Ding believed what Lin Yifan had said.

Times had changed, and Master's affection for each disciple might vary. Lin Yifan was greatly favored by Master, so it wasn't surprising that he was taught antidote refinement.

Thus, he explained, "Junior Brother! Don't overthink it; I asked out of curiosity and caution, not doubt."

"You claim not to suspect me, but you're obviously lying." Lin Yifan thought disdainfully, but didn't dare say aloud.

"Understand! Understand! Suddenly having a new Junior Brother with different methods and skills, suspicion is normal."

"Glad you understand, Junior Brother!" Senior Ding finally breathed a sigh of relief.

He feared that Lin Yifan understood his intentions, which would make future interactions awkward.

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