The old man was indeed poisoned, and it was a very potent poison that could continuously erode the flesh and tissue in his body, causing it to become diseased and necrotic.

If this is delayed for a few more hours, even the night wind may not be cured.

After all, Ye Feng's strength has not fully recovered, and his alchemy skills have also been affected to some extent.

But now, curing him is not difficult for Ye Feng.

“Grandpa, I’m going to treat you with acupuncture now. This process may be quite painful, so please bear with it,” Ye Feng said.

"Please, the old man can bear it," the old man said.

"Okay, then I'll begin."

With a flick of his right hand, Ye Feng produced three gleaming silver needles that appeared between his fingers.

With a flick of his wrist, Ye Feng inserted three silver needles into the old man's acupoints, each needle containing a potent Dragon Emperor's True Qi.

The domineering Dragon Emperor's True Qi immediately entered the old man's body, washing over his meridians and flesh and blood. As a result, excruciating pain came from all parts of his body, causing him to tremble in agony.

With a wave of his hand, Ye Feng sent three more silver needles piercing the old man's acupoints.

Then the old man let out a painful roar, his whole body trembling uncontrollably.

Seeing this, Cui'er was extremely worried, her face filled with fear and trepidation.

"You...you have the Great Five Elements Extinction Divine Needle?" the old man said with difficulty.

"Oh, you actually know about the Great Five Elements Extinction Needle? It seems you're one of us." Ye Feng said with a smile.

Gui Ling'er immediately looked at the girl and asked, "What's your name? Who are you and your grandfather?"

Cui'er hesitated for a moment before weakly saying, "My name is Bi Cui'er, and my grandfather's name is Bi Baojian. Baojian Medical Clinic belongs to my grandfather."

"So it was Doctor Bi in person!" Gui Ling'er exclaimed in surprise.

Night Wind's telepathic message immediately resounded in Gui Ling'er's mind: "You know him?"

Gui Ling'er replied through telepathy, "I've heard of him. Bi Baojian is a very famous doctor in Fengyan City. He has cured many people's difficult and complicated diseases. I heard that he is also a martial artist. As for whether he is an alchemist, I don't know."

"Moreover, our Sand Snake Bandit Gang's third leader was injured by a desert scorpion two years ago. He was poisoned by the scorpion, and one of his arms was almost useless. The third leader came to Fengyan City to find Bi Baojian to cure him. If it weren't for Bi Baojian's help, he definitely would have lost his arm."

Upon hearing Gui Ling'er's words, Ye Feng's face showed a hint of understanding.

Bi Baojian said weakly, "I am not worthy of the title of divine doctor in front of this young master. I have only heard of the Great Five Elements Extinction Divine Needle, but I have never seen it before. Yet this young master was able to use the Great Five Elements Extinction Divine Needle to detoxify the toxins in my body. It has truly broadened my horizons..."

"Grandpa Bi, please stop talking and conserve your energy," Ye Feng said.

Bi Baojian then shut his mouth and stopped saying anything.

Half an hour passed in the blink of an eye, and Ye Feng finally used the Great Five Elements Extinction Divine Needle to completely neutralize the toxins in Bi Baojian's body.

Moreover, the flesh and blood tissue in his body that had been eroded and necrotic by the toxins was rapidly repaired under the impetus of Ye Feng's true energy, and the blemishes on his skin gradually disappeared.

As the night wind removed the silver needles from Bi Baojian's body one by one, Bi Baojian felt the intense pain all over his body quickly recede like a receding tide, replaced by an indescribable ease and comfort.

"Impressive! The Great Five Elements Extinction Needle truly lives up to its name," Bi Baojian exclaimed.

Bi Cuier ran over, grabbed Bi Baojian's hand, and asked with concern, "Grandpa, how are you feeling?"

"I'm much better now. This young master has completely neutralized the poison in my body. I'm fine now," Bi Baojian said with a smile, his expression full of kindness.

Bi Cuier was both surprised and delighted, and tears streamed down her face again.

But now she cries not because of fear and worry, but because of joy and excitement.

Bi Cuier raised her slender hand to wipe away her tears, and said with gratitude, "Thank you so much, my benefactor... May I ask how I should address you, my benefactor?"

"Night Wind," Night Wind said calmly.

Bi Baojian then asked, "Young Master Ye, you are not from our desert region, are you? You look unfamiliar to me, and you don't have any of the marks left by people from our desert region who have walked through the sandstorms."

Ye Feng nodded and said, "I am from the Northern Continent, and an inner disciple of the Hunyuan Sect."

Upon hearing the words "Hunyuan School," Bi Baojian immediately felt a deep sense of respect.

Gui Ling'er's voice rang in Ye Feng's mind: "Aren't you an inner disciple of the Xuanji Sect? How come you've become a member of the Hunyuan Sect?"

"Of course I can't just reveal my true identity so easily," Ye Feng said telepathically.

"Oh, I see." Gui Ling'er suddenly realized.

Ye Feng turned to look at Bi Baojian and Bi Cuier and asked, "Now you can tell me what exactly happened, right?"

Bi Baojian's face showed a deep sense of helplessness, while Bi Cuier looked indignant.

"It's all the Lu family's fault! Lu Guangwei, the eldest son of the Lu family, is no good!"

Bi Cuier said indignantly, and then began to explain in detail from beginning to end.

It turns out that Bi Cuier was born with a metal spirit body, containing abundant metal element spiritual energy within her. However, it was precisely because of this that Bi Cuier was unable to cultivate with Bi Baojian.

Cultivation techniques are scarce in the desert, and there are very few suitable for those with a Metal Spirit Body. Bi Baojian has been searching for many years, but he has not been able to find a suitable Metal Element cultivation technique for Bi Cuier.

Moreover, Bi Cuier possesses the Golden Spirit Body, and somehow this secret was discovered by Lu Guangwei, the eldest son of the Lu family.

Lu Guangwei possesses a water-elemental body and has cultivated water-based techniques since childhood, making him quite powerful.

Moreover, according to the principle of mutual generation and restraint of the five elements, metal generates water, so Lu Guangwei set his sights on Bi Cuier.

If Bi Cuier and Lu Guangwei were to unite and cultivate together, Bi Cuier's Golden Spirit Body would definitely help Lu Guangwei's Water Spirit Body reach a higher level!

So Lu Guangwei intentionally approached Bi Cuier. Lu Guangwei was not a good person to begin with, so Bi Cuier naturally had no interest in him.

After repeated attempts, Lu Guangwei's patience ran out, and he began to use all sorts of despicable means to suppress Baojian Medical Clinic.

Bi Cuier's grandfather Bi Baojian's clinic was greatly affected, becoming deserted and not far from closing down.

Moreover, just three days ago, a fire suddenly broke out, and Bi Baojian's Baojian Medical Clinic was reduced to ashes.

Most importantly, even so, Lu Guangwei still refused to let Bi Baojian and Bi Cuier go.

Lu Guangwei sent his family's experts to attack Bi Baojian, severely injuring him and poisoning him with Lu's poison.

Although Bi Baojian was a renowned doctor, he was helpless against the poison from the Lu family.

Logically speaking, Bi Baojian and Bi Cuier should have reached a point of desperation and no other way out.