During the Ming Apocalypse, there was a very wealthy squire named Yang San in Hongdu County (now Nanchang City), Jiangxi Province. His family had a large number of wives and concubines. Local restaurants, pharmacies, and silk businesses were all monopolized by him. Even though he was so rich, he was still not satisfied. Every day, he tried his best to cheat people's money by various names. Under his manipulation, the local medicinal materials soared, and people gritted their teeth at him.

But the people had nothing to do with him, just because Yang San had a very good relationship with the local county magistrate Xu Yi, colluding to do all kinds of bad things, the people had nowhere to complain and had to swallow their anger. As the saying goes, evil is rewarded, Yang San's only son, Yang Yixian, because he spent all day in places of sensuality, a big tumor the size of a finger grew on his back, so painful that he grinned his teeth and grinned his mouth all day, and found countless doctors who couldn't cure it. Seeing the pain in his eyes, Yang San offered a reward of 100 taels of silver to find a famous doctor to treat Yang Yixian.

A famous doctor named Ma Yi saw the notice and wanted to try it, but after hesitating for a long time, he finally gave up. Ma Yi had a newly grown son named Ma Jiang. Seeing his father's sad face, he asked his father in puzzlement, "I don't know why my father is sad. Do you think the reward is not enough or do you think your medical skills can't cure this disease?"

Ma Yi said, "It's not difficult to treat his illness, but Yang San is not someone who keeps his word. If he is cured, he may not fulfill his promise, so we can't trust his words."

"What kind of medicine can be used to treat his illness?" Ma Jiang asked his father.

Ma Yi looked at his son's curious face and told him all the prescriptions. But he didn't expect that after Ma Jiang got the prescription, he couldn't resist the temptation and volunteered to Yang San's house to treat Yang Yixian's illness. Yang San was very happy after hearing this, promising that if he could cure the disease, he would immediately pay 100 silver taels and never break his promise.

The tumor on his back began to shrink, and after a few courses of treatment, Yang Yixian's condition was almost cured. After Yang San saw it, he was reluctant to pay him money. He thought for a long time and finally thought of a way to cheat. When Ma Jiang asked him for a reward, he said with a cheeky smile: "I am a man who keeps my word, but I think this is clearly a natural improvement of the condition. How can you prove that my son's recovery is your credit?"

Ma Jiangfei tried his best to explain to him, but no matter how he explained it, Yang San wouldn't listen, and in the end, not only did he not pay, but he also sent someone to beat him up. Ma Jiang returned home scared, crying in anger. When Ma Yi saw him like this, he stomped his feet in anger, angrily scolded him and said, "I said long ago that Yang San is a stingy and insatiable person, so you should have a long memory."

Ma Jiang ran out of the house and jumped into the river with the intention of dying. Ma Yi hurriedly rescued her son. When Ma Jiang woke up, his father looked at him with tears and said, "Life and death are in the sky.

Ma Jiang had mixed feelings, nodded helplessly and said, "There is no integrity in people who value money as their life. It is also my fault for not being able to resist temptation. This matter cannot be blamed on others, it is all my own fault."

After this incident, Ma Yi and Ma Jiang concentrated on practicing medicine, and Ma Jiang never thought about the good thing of windfall. But it didn't take long for Yang San to send someone to find him again. This time, it was more appropriate to force him than to invite him. It turned out that Yang San's son Yang Yixian had a strange disease again, and this time his whole body was covered in dense abscesses.

Ma Jiang was in trouble this time. Based on his experience, he could tell at a glance that Yang Yixian's illness was not another disease, but a flower willow disease that had developed to the point where there was no cure, and his life was at stake. But Yang San threatened him and said that if he couldn't cure Yang Yixian's illness, he would never let him go. This is simply driving ducks to the shelves, even the divine doctor Hua Tuo is alive, and there is nothing he can do about this disease.

As the saying goes, the house leak happened to rain overnight. Shortly after Ma Jiang was arrested, a group of people entered Ma Yi's house and burned and smashed all the valuable things, insisting that he take out the valuable things.

Ma Yi was very angry, and after thinking about it all night, he couldn't come up with a good idea. When it was almost dawn, he suddenly thought that the county magistrate Xu Yi was a cynical person, so it was better to make up his mind. He immediately got up and picked up a radish and put it in the medicine cabinet to present to the county magistrate Xu. In the lobby, after Ma Yi told Yang San's crime, he saw that the county magistrate Xu was absent-minded and only stared at his medicine chest, and Ma Yi explained, "The ginseng I brought is a once-in-a-century ginseng. It looks like a radish, but it is actually an immortal ginseng. If the county magistrate Xu can make decisions for me, I will give you this immortal ginseng first."

County Magistrate Xu frowned and looked at it, then accepted the thing with a smile and said, "I will investigate this matter and give you an answer!"

In fact, it was just County Magistrate Xu's perfunctory words. After Ma Yi came back from Xu County Magistrate, he immediately found Yang San and said non-stop, "If you let the dog go, this old man can be cured, and the medicine can be guaranteed to cure the disease."

After hearing this, Yang San was ecstatic and asked, "Are you serious? What if it can't be cured?"

"With my life, I promise that I can definitely cure Young Master's illness, and I will not take any money." Ma Yi looked confident, not like he was lying.

Yang San let Ma Jiang go and stayed behind to treat Yang Yixian. When dispensing the medicine, Ma Yi said to Yang San: "It's not difficult to treat this disease, but there is a pair of medicine in the prescription that is extremely difficult to find."

Yang San said disapprovingly: "What medicine? As long as there is medicine in this world, there is nothing I can't get."

Ma Yi said, "The medicine I need is called Immortal Ginseng. It looks like radish, but it is actually ginseng. If you can't find this prescription, Young Master Yang will be in danger."

At this time, Ma Yi said that he once had one, but he gave it to County Magistrate Xu. Yang San clapped his legs and applauded, immediately bringing a lot of gold and silver to find County Magistrate Xu. When county magistrate Xu saw that Yang San had brought so much gold and silver, he happily agreed to give him the Immortal Ginseng.

After Yang San got immortal ginseng, he immediately gave the ginseng to Ma Yi and asked him to make medicine to treat his son Yang Yixian. Ma Yi said again, "I also want to ask you to help me buy some medicine. The freshness and maturity of this medicine should be moderate. If you don't grasp the measurement well, you will only fall short."

Yang San hesitated for a long time and said to Ma Yi, "If that's the case, then you can go and get the medicine. Now the most difficult ginseng has been found for you. I will prepare enough silver for you, and if it can't be cured, I will definitely take your life." After Yang San finished speaking, he took out a box of snow-white silver ingots and handed it to Ma Yi to buy medicine.

"If it can't be cured, you can take my life at any time." Ma Yi was still extremely confident at this time. He carried the box full of silver taels and ran directly back home. A few people followed him closely and watched him along the way. When he returned to the house, a few people were guarding outside. Ma Yi threw the silver taels to the ground and said to his son Ma Jiang, "Take these silver taels away, the farther the better. Now there are people watching outside, and you can't leave if it's late."

Ma Jiang asked nervously, "But what do you do? Can you really cure him?"

Ma Yi shook his head and said, "There is no cure for this disease. If there is no accident, Yang Yixian will die tomorrow, but don't worry, I will be fine!"

"But how can you stay out of it? How can they believe you?" Ma Jiang was puzzled.

"When a person's mind is full of greed, he exposes his greatest flaw." After saying this, Ma Yi immediately closed the box and went out to grab some medicine and returned to Yang San's mansion.

The next day, Yang Yixian died of his serious illness. Yang San angrily asked Ma Yi, and Ma Yi calmly said that Yang Yixian died because the immortal ginseng given by the county magistrate Xu Yi was poisonous.

Yang San was furious: "Bold! You mean County Magistrate Xu wants to kill my son?"

"That's not what I meant! This is not the Immortal Ginseng I gave to County Magistrate Xu. I don't know if there is any misunderstanding in the middle, you'd better find someone to test it before talking about it." Ma Yi was extremely calm at this time. Yang San was startled, looking for someone to check, this Immortal Ginseng is indeed a radish!

Yang San immediately felt that he had been deceived and insulted, and in his rage, he instantly lost his mind and held the attitude of death and breaking the net, shaking out all the collusion between himself and Xu County Magistrate, causing a storm in the city. Since then, Yang San and Xu Yi, who were full of evil, were punished. Only then did Xu Yi understand that Ma Yi's original intention of offering ginseng was to frame him, but if he was upright, how could he be used by Ma Yi to end up like this? Greed is a trap, Ma Jiang has already paid the price for it, and the county magistrate Xu Yi and the rich Yang San were killed, and there is no way back.

The weakness of a viper is seven inches, but what about a human's weakness? Nothing more than greed.