Solution

Dugu Bo: "Kid, earlier you kept calling me Your Excellency, but now I'm Old Sir Dugu? You're even lecturing me?"

Lin Feng: "Ah, it's all a minor matter. Old Sir, don't take it to heart. I'll now offer you several detoxification plans, and you'll know I wasn't wrong.

"The first plan: I can use medicine to dissolve the poison throughout your body and Dugu Yan's body, including the toxins contained in your bloodline. The advantage of this plan is that the Dugu Clan's bloodline will no longer be eroded by severe poison in the future. The disadvantage is that the Dugu Clan's Martial Soul will no longer be the Jade Serpent, but an ordinary snake Martial Soul. How strong future descendants become will depend on their cultivation, but you, Old Sir, will become the weakest Titled Douluo in the world. You will retain only your Soul Power; all poison-related abilities will no longer be usable. Still, you'll at least remain a Titled Douluo. If you choose this plan, my payment will be ten million Gold Soul Coins.

"The second plan: Old Sir finds yourself some soul bones, as long as they are limb soul bones, then guide the toxins in your body into them. I'll use medicine to nourish the meridians, bones, and blood that have been contaminated by the poison, helping you recover your physical condition. The advantage of this plan is that the toxins can be fully retained and will no longer affect your cultivation. The disadvantage is that the poison problem will not be cured at its root, and your descendants will still be troubled by it. Moreover, aside from External Soul Bones, limb soul bones are limited by the age of the soul beasts they come from and can only hold a limited amount of poison. Once the limit of the soul bone is exceeded, there is a risk of it bursting at any time. As for the consequences of a soul bone bursting inside your body, I needn't explain. For this plan, I'm only providing an idea and some medicinal ingredients for recuperation. Consider the idea a gift, so I'll charge only two hundred thousand Gold Soul Coins.

"The third plan—I'll state the payment first. If Old Sir chooses this plan, I want the entire Ice and Fire Yin Yang Eye to belong to me from now on, including all the medicinal herbs currently within it."

Dugu Bo's expression turned cold. "Kid, this is your true objective, isn't it?"

Lin Feng smiled. "That's right. After seeing Dugu Yan yesterday, I had this guess. That was why I used fire to purge her poison and told her she was poisoned—the target was you, Old Sir. My original guess was that it was either a treasure that balanced yin and yang, or a blessed land. Both would be useful to me. So, Old Sir, do you still want to hear my third plan?" Lin Feng told a lie. He did not say that he had been laying the groundwork for a long time already, afraid that he would truly provoke Dugu Bo and drive him to desperate measures.

Dugu Bo: "Aren't you afraid I'll turn around and leave right now, go back and implement your second plan directly? As for restoring my body, it isn't as though I absolutely need you."

Lin Feng: "I'm not afraid. I believe you, Old Sir, will want to hear my third plan."

Dugu Bo looked deeply at Lin Feng. "Kid, you win. Though you schemed against this old man, I find myself liking you a little. Go on, what is the third plan?"

Lin Feng: "The Ice and Fire Yin Yang Eye has existed for hundreds of thousands of years. It must have produced many Immortal Herbs. Let me confirm something first—Old Sir, you haven't ruined the medicinal herbs there, have you?"

Dugu Bo: "Rest assured. This old man hasn't touched a single herb there. I've only planted many poisonous herbs for my own use."

Lin Feng: "That's good. Then my promise is this: I can help you and Dugu Yan achieve Martial Soul Evolution. You can retain the Jade Serpent's toxicity while increasing the Martial Soul's power, and from then on, the Dugu Clan will no longer suffer from poison for as long as it endures."

Dugu Bo shot up from his chair. In that instant, he was so excited that he lost control of the Soul Power within him, shattering the chair outright. "Kid, are you telling the truth?"

Lin Feng: "Of course. The herbs produced by an Ice and Fire Yin Yang Eye that has existed for more than a hundred-thousand years are all Immortal Herbs. Immortal Herbs can strengthen one's foundation, nurture one's vitality, and promote Martial Soul Evolution compatible with one's attributes. Based on my judgment, this place may have existed for several hundred thousand years. There should be at least ten Immortal Herbs here, and it won't be difficult to find one that can evolve the Jade Serpent Martial Soul.

"Furthermore, I can swear upon my Martial Soul that all the Immortal Herbs in the Ice and Fire Yin Yang Eye will first be used for you and Dugu Yan's Martial Soul Evolution. Only the remainder will be mine. If I fail to do so, I am willing to compensate you for free with a Ten Thousand Year Soul Bone for use in your second plan, and I will never mention the Ice and Fire Yin Yang Eye again.

"I should also remind you that every Immortal Herb within the Ice and Fire Yin Yang Eye is, in some respects, worth no less than a Hundred Thousand Year Soul Bone.

"Now, Old Sir, you can consider what choice to make."

Dugu Bo replaced the chair and sat down. After thinking for a long while, he finally spoke, his voice even carrying a trace of hoarseness. "You seem to have given this old man three choices, each with its own result. But once the third plan was presented, how could I possibly think highly of the first two? Kid, it would have been great if you were a member of my Dugu Clan. I've made up my mind. I choose the third plan. No matter how precious those Immortal Herbs are, things one cannot use have no value."

Lin Feng: "As expected of a Titled Douluo. Old Sir truly has courage."

Dugu Bo looked at Lin Feng meaningfully. "It's truly hard to believe that you're only nine years old. Kid, you saw my Yan Yan yesterday too. She's pretty, isn't she? How about becoming this old man's grandson-in-law?"

Lin Feng was speechless. This old man had tried to sell his granddaughter to Tang San, and now he was pulling the same trick on me. "Your Excellency Dugu—Old Sir Dugu—you do know that I'm only nine years old, right? Besides, the one pursuing your granddaughter is no ordinary person: a direct descendant of the Blue Lightning Tyrant Dragon Clan. That background is far better than my Lin Family's."

Dugu Bo: "The Blue Lightning Tyrant Dragon Clan is indeed much stronger than your Lin Family, but that kid cannot compare to you. And this old man can foresee that, in the future, the entire Blue Lightning Tyrant Dragon Clan will be unable to compare to you."

Lin Feng did not want to continue this topic, so he changed the subject. "When does Old Sir plan to resolve the poison problem for you and Dugu Yan? We'll need to go to the Ice and Fire Yin Yang Eye."

Dugu Bo: "Tomorrow. I'll go to Heaven Dou Royal Academy shortly to pick up Yan Yan and tell her about this. Then the three of us can go to the Ice and Fire Yin Yang Eye tomorrow. How does that sound?"

Lin Feng: "No problem. But before that, Old Sir, don't blame me for being a petty man before a gentleman. I believe that Old Sir Dugu keeps his word, but I do not wish to gamble on human nature. So, let us each swear a Martial Soul Oath. I will swear upon my Martial Soul to ensure that I fulfill all the promises above, while Old Sir will swear upon yours to ensure my safety and never reveal any information about the Ice and Fire Yin Yang Eye in the future. How about it?"

Dugu Bo: "You don't trust this old man? I have traveled the continent for so many years. Though I've slaughtered countless people and committed every evil, I have always kept my promises and never broken a contract."

Lin Feng: "I believe that Old Sir Dugu is a man who values trust and promises, but I believe in human nature even more. Today is only our first meeting. Though I have a rather favorable impression of you, Old Sir, with such a major transaction at stake, it is better to be cautious. A Martial Soul Oath protects both of us. What do you think, Old Sir?"

Dugu Bo: "Kid, you're clever, knowledgeable, bold, meticulous, and exceptionally talented. This old man likes you more and more. I, Dugu Bo, swear upon my Martial Soul that while Lin Feng helps this old man resolve the Martial Soul problem, I will guarantee his life and safety, ensuring that he suffers no harm. If Kid Lin fulfills his promise and resolves this old man's Martial Soul problem, then so long as Kid Lin does not take the initiative to attack this old man, I will not become his enemy. I will also give the Ice and Fire Yin Yang Eye to Kid Lin as promised. From myself downward, the Dugu Clan will never mention any information about the Ice and Fire Yin Yang Eye to outsiders."

Lin Feng: "I, Lin Feng, swear upon my Martial Soul today that I will use the Ice and Fire Yin Yang Eye to help Poison Douluo Dugu Bo and his granddaughter Dugu Yan resolve their Martial Soul poison problem, prioritizing the Immortal Herbs of the Ice and Fire Yin Yang Eye to ensure the Martial Soul Evolution of the two of them. If I cannot accomplish this, the transaction will be void, and I will compensate Poison Douluo with a Ten Thousand Year Soul Bone."

After the two had finished swearing their oaths, Lin Feng extended his right hand to Dugu Bo. "Old Sir, then I wish us a pleasant cooperation. Once the medical hall opens tomorrow morning, I'll wait here for Old Sir to pick me up."

Dugu Bo shook Lin Feng's hand. "Kid, a pleasant cooperation. See you tomorrow."