A Niu was a butcher who fed his family by killing pigs and selling meat. There was a big black sow in his family, which had produced many cubs over the years. A Niu was grateful for his contribution and was reluctant to kill him. Seeing that the big black pig was old, he decided to wait for it to die.

That night, A Niu had a dream, and the big black pig said to him, "Master, I've already gone to see Lord Yama." To repay you for your kindness of not killing, I left a fist-sized red mark on my waist.

A Niu went to the pigsty and saw that the big black pig was indeed dead. He shaved and washed the pig, and found that there was really a red mark on his waist. A Niu cut the meat with the red mark as instructed, cut a small piece from the side, and cooked it for the whole family to eat. It tasted very delicious. After eating, he went to see the meat again, and it was as good as ever.

Since he had that magical piece of pork, A Niu had stopped being a butcher. He had a paralyzed father and a sick wife at home, and he also had to take care of his youngest son. Now he can take care of his family without worrying about food and clothing. But A Niu had not forgotten the poor families in his village, and he would often cut off some meat and send it to them.

There are no walls in the world that are airtight, and Ah Niu's kindness soon caused trouble. One day, a butcher in the village passed by a poor house and smelled the aroma of meat inside, so he went in to ask the truth. The poor man had to say that the meat was given by Ah Niu, and the butcher suddenly became suspicious: Ah Niu has not been a butcher for a long time, and he has never been seen buying meat in the market. Where can the meat be given to others?

The butchers in the village soon gathered together, and everyone was talking, and they all felt that there was something wrong with A Niu: although he didn't kill pigs anymore, when he saw others killing pigs, he would be eager to help, probably taking the opportunity to steal meat. So the butchers went to A Niu together to ask for an explanation.

A Niu didn't dare to tell the secret of the pork, but he could not find a reason to explain it, so he was dragged to the official residence. The county magistrate's surname was Zhu, but after he asked, there was no result, so he called someone to search A Niu's house, and soon someone brought the pork back.

When Ah Niu saw Meat's expression change greatly, he not only immediately admitted that he had made a mistake, but was also willing to take all the valuable things in the family to compensate, and begged County Magistrate Zhu to return the pork to him. County Magistrate Zhu was astonished, and when he saw that there was a mark on the meat, he suddenly became more concerned, ordered the pork to be confiscated, sentenced Ah Niu to compensate other butchers, and beat him dozens of big boards and drove him out of the official palace.

At night, when Ah Niu lay in bed moaning, he saw the big black pig in his dream again. He vomited bitterness, but the big black pig comforted him not to be upset. In two days, the governor will come to the county to inspect, and then it will only be so. Ah Niu didn't know what it meant, so he had to keep it all in mind.

Speaking of which, the county magistrate brought the confiscated pork home and was carefully looking at it. A person walked out of the inner room, and it was his father, Grandfather Zhu. Grandfather Zhu weighed 300 catties, and when he saw the pork, his eyes lit up. Seeing that his son was confused, he said, "Boil the meat and taste it, I don't believe it's strange!Saying this, he immediately asked someone to cut half of it and cook it, just in the middle of the red seal, and the pork would no longer recover.

After the meat was cooked, Grandpa Zhu tasted it and immediately exclaimed, "This meat is so fragrant! No wonder this guy couldn't bear it." The county magistrate Zhu also felt delicious after tasting it, and his mind turned around and he had an idea: the next day, the governor would come to the county to inspect, and he was worried about how to please him." This piece of meat came at the right time!

The next day, county magistrate Zhu invited the governor to his home as a guest. As soon as the governor picked up the chopsticks, he smelled the aroma of meat, and after eating two mouthfuls, he was even more impressed: "I have never eaten such fragrant pork, who raised the pig?" County Magistrate Zhu had to answer truthfully, and the governor asked someone to call A Niu over.

The governor asked Ah Niu what he knew about raising pigs, and Ah Niu answered according to the instructions of the big black pig: "Master Hui, the pigs in this county are well raised, and the meat of other people's houses is also very fragrant." The governor was a little displeased: "It seems that you don't want to reveal the secret!Ah Niu said again, "My lord doesn't know, pigs are raised the same, but other people's pork will be contaminated when it arrives at the meat market. My piece of meat is the only one that has not been contaminated, so it looks very fragrant." The governor was a little surprised and decided to go to the meat market to find out the situation in person.

A Niu smiled and said, "These pork are fine on the surface, but they are seen by insatiable eyes every day and touched by dirty hands, so the taste naturally changes." The governor was so smart that he immediately guessed what he meant and immediately summoned all the butchers to ask.

In fact, the person who managed the meat market was none other than Zhu County Magistrate's father, Grandfather Zhu. The old man was addicted to meat and had nothing to do. He would come here early every morning to wander around.

The governor was furious when he heard that, and immediately ordered an investigation, and found out that the owner of the meat market was none other than the county magistrate Zhu. He not only coerced the butchers in the county to sell meat here, but also levied high management fees, and even connived at the old man's misdeeds. The governor immediately dismissed the county magistrate Zhu and brought him to justice.

After rectifying the meat market, the governor ordered that government personnel no longer participate in market management, and a supervisor was transferred from other places.

That day, when A Niu had just arrived at the meat market, the new supervisor motioned for him to go over and quietly took out a piece of pork from his arms. A Niu was shocked when he saw it. Why is there a red mark on this piece of meat? He only heard the supervisor say, "Master, don't you know me? I'm a big black pig!"

It turned out that after the death of the big black pig, Lord Yama was surprised that it had escaped the bloody disaster. After hearing it mention the kindness and difficulties of its master, A Niu, he rewarded him with a piece of meat that could not be cut. Unexpectedly, the big black pig and A Niu used this piece of meat skillfully to punish corrupt officials and benefit the people. As soon as Lord Yama was happy, the big black pig was reincarnated in advance.

Then the supervisor drove out a big fat pig from the side and said to A Niu, "I'll send you another sow, you can continue to do your old job and see if it looks familiar?A Niu did not know what to do, and saw the pig waddling up, making the butchers around him laugh: "Isn't this just like how the old man Zhu walks?"

A Niu suddenly realized, laughed, and drove the pig back home. When he got home, he weighed exactly three hundred catties.