Yun Lintian retracted his gaze and calmly greeted Hong Wuya with his head bowed down slightly. "Greetings, Senior Hong. My name is Yun Lintian. Please forgive me for my rude behavior earlier. I've practiced medical profound art since young, and I couldn't help but check on a patient out of my habit."

"Oh? What did you see then?" Hong Wuya's words surprised Bai Yun and Cai Xuwen as both didn't know why this old man's temper suddenly creased. Usually, Yun Lintian would get scolded by the old man to death by now.

"I presume Senior has suffered injuries around eight months ago." Yun Lintian said. Seeing the old man nod, he continued. "Afterward, Senior probably tried to heal the wounds normally by using origin profound energy along with a potent healing pill. However, Senior soon discovered the wounds not only didn't recover but also got worse. The more Senior taking healing pills, the worse wounds have become."

Yun Lintian looked at a huge stabbing wound on Hong Wuya's waist and continued. "I believe Senior should discover your five senses has begun to decline recently, and Senior cannot circulate your origin profound energy at will. However, no matter what Senior tries to check, there isn't a single trace of abnormality within Senior's body. On the contrary, Senior feels your vitality has increased tremendously."

"You're right! Do you have a solution!?" It was Cai Xuwen who exclaimed excitedly. 

"Shut up!" Hong Wuya yelled at Cai Xuwen, causing her to shut her mouth tightly. He turned to Yun Lintian and said calmly. "Everything is like you said. But this is not the first time someone said this to me."

Yun Lintian smiled faintly and said. "Then, has anyone ever told Senior that Senior has been poisoned?"

Bai Yun and Cai Xuwen's expressions changed drastically while Hong Wuya frowned slightly. 

"Are you sure I was poisoned?" Hong Wuya's muddy eyes turned sharp, staring at Yun Lintian as though he tried to find whether Yun Lintian lied to him.

"One hundred percent." Yun Lintian replied confidently. 

When Yun Lintian discovered the greenish energy within Hong Wuya's body, he quickly searched for information in his head and found one such toxin. It was called Deep Sea Poison which was usually found on deep-sea creatures such as naga and merman. This poison had the ability to conceal itself as a lifeforce and slowly turned the target's lifeforce into its own. The more lifeforce it absorbed, the stronger it became. That was why all those healing pills full of vitality were ineffective and stimulated the poison instead.

Hong Wuya stared at Yun Lintian for a long time, and he could tell Yun Lintian was genuinely confident in his judgment. There were only two explanations, one he had indeed possessed peerless medical skills, and another one he was an idiot who blindly believed in himself.

"Very well. Since you said all of this, I presume you have a solution already?" Hong Wuya asked calmly. There was no joy or sorrow on his face. It was as if he was accustomed to a disappointment.

Yun Lintian nodded slightly. "I indeed have a solution."

"Is that true!?" Cai Xuwen jumped out again and hurriedly covered her mouth while looking at Hong Wuya fearfully.

"What do you want?" As someone who lived more than a thousand years, Hong Wuya didn't believe Yun Lintian would treat him without getting something in return.

Bai Yun kept winking at Yun Lintian, trying to tell him not to bargain with the old man but was entirely ignored by Yun Lintian.

Yun Lintian pointed at Yang Chen, who stood on his right side and said. "I want Senior to promise me. No matter what ranking he got in the assessment, Senior must accept him into Starry Hall."

Bai Yun, Cai Xuwen, and Yang Chen were taken aback. Especially Yang Chen. He didn't understand why Yun Lintian said this.

"Brother Yun…" Yang Chen wanted to say something, but Yun Lintian interrupted him.

"I believe Senior must've seen his potential already." Yun Lintian said while retracting his hand.

Hong Wuya went silent once again before laughing heartily. His laughter made Bai Yun and Cai Xuwen stupefied for a while. It had been several years; they hadn't seen their master laughing like this.

"Hehe. Are you sure? You know, I won't lose anything in this deal." Hong Wuya asked with a rare smile.

"Yes, I am sure." Yun Lintian answered with a confident smile.

"Very well. This old man promises you. Heh, my Starry Hall has picked up a treasure this time… Cough!" Hong Wuya chuckled slightly before turning to a heavy cough.

Three silver needles appeared in Yun Lintian's hand, and he quickly flicked his wrist, sending all of them toward Hong Wuya. The silver needles precisely pierced into Hong Wuya's soul gate, heart gate, and profound gate. They pierced Hong Wuya's body easily because Hong Wuya let them in. Otherwise, with Hong Wuya's strength, Yun Lintian absolutely couldn't do anything.

"Please lie down, Senior." Yun Lintian walked to the bed and opened Eyes of Heaven to check on Hong Wuya's body.

A moment later, he turned to Cai Xuwen and said. "Sister Cai, do you have a twin souls flower and Profound Spiritual Liquid here?" Yun Lintian naturally had them, but he wasn't stupid enough to take them out casually.

"We have it here. How many do you want?" Cai Xuwen hurriedly asked. She was eager to see her master recover.

"Just two flowers and a half cup of Profound Spiritual Liquid. Oh, please bring a large tub with cold water." Yun Lintian answered and turned his head back to Hong Wuya.

"I'll be right back!" Cai Xuwen said and vanished from the spot. 

"Senior, the method I am using this time will affect Senior's Profound Vein significantly. I will have to trouble Senior gathering all of your origin energy in your heart gate and hold it until I finish." Yun Lintian said solemnly. 

"Go ahead." Hong Wuya replied calmly.