The two men blocking Zhao Zhi froze instantly, while Zhao Zhi behind them showed clear anger on his face. If Zhang Yang hadn't had so many people with him, he would have exploded in curses.

"Sir, I state again, I mean no harm. You genuinely have an illness!"

Zhang Yang felt speechless. After saying those words, he himself felt incredibly awkward.

He could understand the mood of the person opposite him. If it were him, suddenly being stopped by someone who declared him sick, he wouldn't feel much better either.

It was unfortunate, but whether in his past life or now, Zhang Yang's contact with patients had always been passive. Unless it was an emergency situation like Qin Zheng's, he never actively sought out the sick to offer treatment. He truly didn't know how to phrase this properly.

Let alone him, most doctors probably hadn't experienced anything like this.

Doctors heal the sick; they aren't door-to-door salesmen pitching their services. How could they proactively seek out patients? From ancient times to the present, whoever is sick goes directly to the hospital to see a doctor for treatment. Doctors who actively go out looking for patients are exceedingly rare.

However, this phenomenon wasn't entirely absent. In the past, some quacks liked to use this tactic to fool people, starting with, "You're sick, you must spend money to avert disaster." Now that society is stable, these kinds of tricksters have almost disappeared.

"I'm sick?"

Zhao Zhi laughed in anger. His hand had already quietly pressed a number on his waist phone, sending the call out. He only had two subordinates now, and they were both ordinary employees; they couldn't confront Zhang Yang and his group head-on.

Behind Zhang Yang, the two burly men looked like trouble, not to mention Qin Yong and the others who were already gathering nearby.

Qin Yong also brought bodyguards when he went out.

"Sir, I know this is hard to accept, but you truly are sick, and it's a serious illness!"

Zhang Yang rubbed his nose helplessly. After searching for nearly half a day, he finally found a suitable patient. The person before him had a serious illness, a very troublesome one at that.

Fortunately, his condition hadn't fully deteriorated, so Zhang Yang still had a chance to treat him. For Zhang Yang, this was the most suitable subject for today's competition.

"Fine, you say I'm sick. Then what illness do I have? Tell me clearly right here on Central Avenue. Oh, and this is Number 320!"

Zhao Zhi said loudly. He was a smart man. His phone call was active, effectively broadcasting his location.

He was a wealthy man, an ultra-rich billionaire. Zhang Yang suddenly standing before him declaring him sick, accompanied by so many people, instinctively put him on guard.

Zhang Yang sighed softly and slowly said, "I told you, you don't need to worry, and don't be afraid!"

"Fine, say it. I'm not worried, and I'm not scared!"

Zhao Zhi laughed loudly. He was confident that Fatty Niu, who received the call, would hear all this. Without speaking again, he repeated the address. Fatty Niu would understand he was in trouble and would certainly come to his aid.

He planned to settle accounts thoroughly with these people once his reinforcements arrived.

"Your illness is a tumor..."

"A tumor? Why don't you just say I have cancer?"

As soon as Zhang Yang spoke, Zhao Zhi interrupted him, shouting angrily at Zhang Yang.

Zhang Yang shook his head again. He could understand Zhao Zhi's feelings. If it were him, being told by a stranger that he had a tumor, he wouldn't be able to accept it either.

Not to mention him, even Su Zhantao and Qin Yong had their eyes wide open now.

Su Zhantao even pulled Zhang Yang’s sleeve and whispered, "Zhang Yang, is he really suffering from a tumor?"

"Yes. See that black mole? That's it!"

Zhang Yang replied quietly. What he was focused on now was how to make Zhao Zhi believe him and agree to treatment. He couldn't force a patient, could he?

Zhang Yang wasn't a doctor in a mental hospital, where coercion existed.

"A black mole can be a tumor?" Su Zhantao's eyes widened again.

Su Zhantao wasn't a doctor and didn't know these things, but he had certainly seen many black moles. He even had some on himself, though none as terrifying as the one on Zhao Zhi's face.

But no matter how horrifying it looked, it was just a mole. Su Zhantao, lacking professional knowledge, never imagined a mole could become a tumor, especially one growing on the face.

After briefly explaining to Su Zhantao, Zhang Yang turned back to Zhao Zhi and said, "I can only say that right now it is a tumor and hasn't fully deteriorated. But if it continues like this, in a year or two it will reach the late stage—that will truly be cancer!"

Zhang Yang’s voice wasn't low; everyone heard what he said this time.

While speaking, Zhang Yang felt a degree of helplessness. This was the absolute truth, yet judging by the expressions of those around him, clearly none of them believed him, including Qin Yong who accompanied him.

"You're the one getting cancer, you bastard!"

Zhao Zhi disregarded the fact that the other party had more people, jumping up in fury. He was a man of wealth and status; being cursed with cancer on the street was something he could no longer tolerate.

In his mind, Zhang Yang's words were a curse calling cancer upon him.

His two subordinates quickly restrained him. A wise man doesn't fight when the odds are against him. They had seen that as soon as Zhao Zhi moved, those two burly men belonging to the other side had also approached. If they fought now, they would certainly be at a disadvantage.

It must be said that the bodyguards Su Zhantao hired on impulse were proving somewhat useful.

Zhang Yang managed a wry smile and said, "Sir, the truth is often hard to hear, and the best medicine is often bitter. Let me ask you, do you often experience localized skin ulcerations that don't respond to medication, and then heal on their own, only turning slightly darker?"

The raging Zhao Zhi suddenly stilled. The two men holding him finally relaxed their grip, and Zhao Zhi's agitation finally subsided somewhat.

"Yes, I have. So what?"

Zhao Zhi nodded, wondering if these people had actually investigated him beforehand to know his situation.

For the past year, he had indeed experienced ulcerations, which were itchy and somewhat painful. He went to the hospital for checks, and the doctor prescribed some simple medication. Sometimes the medicine worked, sometimes it didn't, but the ulcerated area would eventually heal by itself.

Also, the skin in those areas was indeed slightly darker than elsewhere.

Zhang Yang asked again, "And, does this black mole on your face feel a faint ache at night recently, though not severe?"

"I admit, it does. How did you know?"

Zhao Zhi was truly astonished now. He could perhaps explain away the skin lesions; if this person had intentionally sought information, everyone close to him knew about that, and he had been to the hospital.

But the faint ache in the mole on his face was a recent development—something no one but him knew about.

Zhang Yang sighed softly and slowly said, "These are manifestations of your condition. The mole on your face is a tumor. It's still early stage now. If it continues like this, it will reach the late stage in a year or two, and that will be real cancer!"

Zhang Yang's voice carried clearly, and this time everyone heard him.

Even so, Zhang Yang felt helpless inside. This was the absolute truth, yet observing the expressions around him, clearly no one believed him, not even Qin Yong who was accompanying him.

"You're the one getting cancer, you scoundrel!"

Zhao Zhi ignored the numerical disadvantage and jumped up in anger. He was a man of means and status; being publicly cursed with cancer was something he could no longer endure.

In his mind, Zhang Yang’s words were a curse upon him to contract cancer.

His two subordinates rushed to restrain him. A wise man doesn't fight when the odds are against him. They saw that as soon as Zhao Zhi moved, the two burly men on the other side had also closed in. If they fought now, they would definitely be at a loss.

It must be said that the bodyguards Su Zhantao hired on a whim were quite useful.

Zhang Yang offered a helpless, bitter smile. "Sir, the truth is often hard to hear, and the best medicine is often bitter. Let me ask you, do you often experience localized skin ulcerations that don't respond to medication, then heal on their own, only turning slightly darker?"

The furious Zhao Zhi suddenly paused. The two men holding him finally breathed a sigh of relief, and Zhao Zhi's emotions stabilized somewhat.

"Yes, I do. So what?"

Zhao Zhi nodded, secretly wondering if these people had really done background checks on him.

For the past year, he had indeed experienced ulcerations, which were itchy and somewhat painful. He went to the hospital for checks, and the doctor gave him some medicine. Sometimes it helped, sometimes it didn't, but the lesion would heal on its own afterwards.

Moreover, the skin in those spots was indeed a shade darker than the surrounding areas.

Zhang Yang asked again, "Also, does this black mole on your face feel a faint, though not severe, ache at night recently?"

"I admit, it does. How do you know?"

Zhao Zhi was truly surprised now. He could perhaps explain away the skin lesions; if this person had specifically investigated, his close relatives would know about that, and he had even visited a hospital.

But the faint ache in the facial mole was a very recent thing, known only to him.

Zhang Yang sighed lightly and slowly said, "These are all symptoms of your illness. The mole on your face is a tumor. It's still early stage; if it reaches the late stage, it will be serious trouble!"

"My mole is a tumor? How come I never knew? This mole has been with me for over forty years; now you're telling me it's a tumor?"

Zhao Zhi raised his hand, pointing at the mole on his face, and shouted loudly.

The symptoms Zhang Yang mentioned had made him slightly inclined to believe him, but claiming this mole was a tumor was something he absolutely could not accept. Not only him, but even Su Zhantao, who followed Zhang Yang, was beginning to doubt.

A common mole on the face suddenly becoming a tumor—that was truly hard to swallow.

"It's true. I am a doctor; I wouldn't lie to you!"

Zhang Yang sighed again, mentally questioning why Ji Hongguang had set up such a competition method. He felt utterly awkward right now.

But since he had agreed, he would see this competition through. This person before him was the most suitable patient, and he couldn't let this opportunity slip away.

"Fine, if you're not lying to me, then tell me, what kind of tumor is this?"

Zhao Zhi's face held a smile, but his eyes carried a hint of mockery. He was estimating the time. Enough time had passed since he made the call; his backup should be arriving soon.

When his men arrived, he would regain control of the situation, and then he would properly question Zhang Yang about his true intentions.

"Yours is a melanoma!"

Zhang Yang looked at him and slowly uttered the words. Melanoma is skin cancer. Strictly speaking, Zhao Zhi's current condition was early-stage skin cancer. If he hadn't encountered Zhang Yang today, once it deteriorated, it would have been severe.

"Melanoma? Never heard of it. Has anyone here heard of it?"

Zhao Zhi laughed heartily and glanced back, waiting for his men to arrive.

There were already some onlookers gathering around, and many were discussing. It was the year 2008; If You Are The One hadn't aired yet. Unlike later times when that movie made many people aware of this disease, at least many people nearby hadn't heard the name.

This made Zhang Yang sigh at the lack of popular science education regarding basic medical knowledge.

Zhang Yang glanced to the side, and his eyes immediately lit up. There happened to be a bookstore right next door. This was the medicinal market, and bookstores here would certainly stock books on herbs and medicine.

Melanoma wasn't actually a rare disease; many books contained introductions to it. With this bookstore, as long as he could find a medical book mentioning it, he wouldn't have to struggle so hard explaining.

With this thought, Zhang Yang looked up and pointed at the bookstore beside them. "Sir, if I tell you, you won't understand. How about this: there’s a bookstore right there. Let's go to the bookstore, and I'll find the data on this disease for you, and then you'll understand if everything I said is true!"

Zhao Zhi was about to shake his head, but when he looked up, he saw that the bookstore was exactly Number 320. That was the address he had just given. After a moment's thought, he agreed.

There were quite a few people inside the bookstore, so he wasn't worried about what Zhang Yang and his group might do to him once they went in.

The bookstore was large, not small. Zhang Yang guessed correctly; it held many books on medicine, especially those related to medicinal herbs. To establish a foothold in the medicinal market, study was unavoidable, and these books sold very well.

Soon, Zhang Yang found a medical text introducing tumors. With cancer patients increasing year by year, such books were gradually gaining popularity, and bookstores stocked them for retail.

A significant portion of this book described skin cancer, and the term "melanoma" appeared within it. After reading for only a short while, Zhao Zhi’s eyes were glued to the pages, growing more astonished the more he read.