What does it mean that a dog bites Lv Dongbin and doesn't know how to be good?

It is said that Lv Dongbin is a wealthy businessman, but he is charitable and often helps the poor to do some good things, so all his neighbors respect him. One winter, when Lv Dongbin went out, he met a young man of eighteen or nine years old, shivering with cold in the wind. When Lv Dongbin saw the rise of compassion, he asked the young people why they were cold in the open air. The young man told him that his name was Gou Bite, and he was a scholar. Just because there was a lawsuit at home not long ago, his father was killed and his mother was angry. All the premises and property in the family were confiscated, leaving him wandering alone, frozen and hungry all day, and had not eaten for several days. Lv Dongbin saw this young man named Gou Bite's plane, like a scholar, and said to let Gou Bite go with him to his home, to control his food and to provide him with education. If this bite listened to the exultation, he immediately knelt down to thank the benefactor and left with Lv Dongbin.

After Bin takes Gou Bite home, don't ask him to do anything, as long as he devotes himself to his books every day, so that he will have a good future in the imperial high school. Neighbors have said that Lv Dongbin is better than his own children. If you bite, it's really disappointing. You study hard, you can't get out of the door all day, and your knowledge is improving day by day, so you don't feel that after a year, it's almost time to catch the exam. On this day, a guest came to Lv Dongbin's house, surnamed Lin, an old friend of Lv Dongbin, who hasn't been to his house for a long time. Lv Dongbin is naturally hospitable to guests, and good wine and meat are put on the table. After seeing Gou Bite, a friend surnamed Lin asked Lv Dongbin about it because he didn't know him. Lv Dongbin said to him one by one about Gou Bite. After listening to this, Lin's friend sympathized with and appreciated Gou Bite's family experience and his eagerness to study knowledge. In addition, seeing Gou Bite's fine features and good looks, he expected that he would be successful in the future, so he fell in love with him. I consulted Lv Dongbin and said that I would like to betroth my daughter to him. I wonder if I can promise? Lv Dongbin wants Gou Bite to study in his heart, and now the exam is just around the corner. He really doesn't want to promise to talk about marriage for fear of being distracted by Gou Bite. But it's hard to refute my friend's face, so I have to pass the buck and say that I want to ask Gou Bite himself. Lin's friend was eager to find a husband, so he immediately took Lv Dongbin to find Gou Bite and asked him face to face if he would like to. If you bite and listen to such a good presentation, you can't be unwilling to say yes. Lv Dongbin have nothing to say, and can't go back on our word. Seeing that the exam is only two months away, wouldn't it be a waste of effort if you miss your future because of your lust for sex in bed? Thinking about it, I still have to find a way to stop Gou from getting married. So Lv Dongbin called Gou Bite aside and said that it was ok to get married, but he had to promise himself one condition, that is, Gou Bite was not allowed to enter the bridal chamber in the first three days of the wedding, but he had to study by candlelight until dawn, while he kept himself in the bridal chamber for Gou Bite's supervision. Originally, I wanted to use this condition to make Gou Bite give up the idea of getting married, but who wanted to get married, actually agreed. Lv Dongbin can only promise to let Gou Bite get married before the exam. The wedding was very lively and ostentatious. After the bride and groom worshipped heaven and earth, Lv Dongbin set out to see off the guests, and called Gou Bite to the study to study. He himself went into the bridal chamber, sat at the table and read a book. The bride could not see the groom's face clearly through the red scarf, and sat on the bed after entering the bridal chamber, hoping to wait for the groom to lift the red scarf and rest together, and enjoy the wedding. Who knows that the "groom" didn't come near, and he was a woman and embarrassed to take the initiative to pull, so the wedding night passed. The next day and the third day passed like this. On the fourth night, Lv Dongbin said to Gou Bite, "You can go into the bridal chamber, but don't miss your study career because you are greedy for sex." If you agree, you will immediately enter the bridal chamber and reunite with your new wife. The bride is puzzled by what happened in the past few days. She was very surprised to see this handsome young man and the "groom" she vaguely saw these nights. Gou Bite told me the cause and effect of the incident, and the bride also told me what happened these three nights. Only then did they suddenly realize that Lv Dongbin was painstaking and really hoped that Gou Bite could become famous in the exam. At present, the two were very moved, and they vowed to study hard and get a good reputation. The wife also said that she would fully support her husband's exam. The day to catch the exam is coming in a blink of an eye. If bite live up to expectations, took an examination of a third place in palace examination. It didn't take long to receive a letter of appointment and was sent to other places to be an official. Before leaving, if you want Lv Dongbin to go with him, you can enjoy yourself. Lv Dongbin said, "I have family property, and I have no worries all my life. You just took office, but you still have to do your own business first. I won't go with you. If bite see persuade Lv Dongbin, had to take his wife to office. When leaving, I told you repeatedly that you must come to me if you have anything urgent. The two families parted in tears. ? As the saying goes, something unexpected happens in the sky. More than a year after the bite, a fire broke out in Lv Dongbin's house, burning all the property in the house. First, the family lived on the help of relatives and friends. Later, relatives and friends didn't want to talk to him, and life was really difficult to maintain. One day, Lv Dongbin's wife discussed with him, saying that we had sponsored Gou Bite to study, which made him successful and promoted. Now that we are in trouble, it is better to borrow some money from him to start a business. Lv Dongbin refused to go because he was afraid of being laughed at, but he couldn't bear the pressure of life, so he had to reluctantly borrow money from Gou Bite. After walking for more than ten days, I finally found Gou Bite's home. Seeing the benefactor's arrival, Gou Bite was very happy and gave a banquet to entertain him. During the dinner, Lv Dongbin told him about his family's changes in the past two years, and politely offered to borrow some money as capital to build a house and do business for his family. If you bite, you don't say borrow, you don't say don't borrow, just entertain him to drink and eat meat, and play around, every day. After two months of this life, Lv Dongbin was worried that his wife and children had no food or shelter at home, and he couldn't rest any longer. So one day he left without saying goodbye and went home by himself. Along the way, Lv Dongbin thought that he had been so generous in helping Gou Bite, but now Gou Bite is heartless and refuses to help him. His heart can't stop being very angry. Everyone on the road talks about Gou Bite, and all the people who listen to him accuse Gou Bite of being heartless and not repaying good people. When he got home, Lv Dongbin was surprised to find that a new house had been built on the land where his house had been burnt down, which was much more beautiful than his old house. Lv Dongbin doesn't know whose new house it is, and he dare not go in. Suddenly I heard crying in the new room, as if someone were calling his name. He tried to get closer and saw a coffin in the front hall, and it was his wife and children who were kneeling in front of the coffin crying. Lv Dongbin hurried forward and asked who died. Unexpectedly, when his wife saw him, she was so frightened that she even asked him if he was a man or a ghost. Lv Dongbin asked the reason, and when his wife calmed down, the two men told each other about their separation? It turns out that life at home has been very difficult since Lv Dongbin left home. After about 2 days, a group of people suddenly came, and they threw themselves into it. A new house was built on his old house, which was just completed the day before yesterday. Yesterday, several people came again, carrying a coffin, saying that it contained Lv Dongbin, who had just died a few days ago because of cholera. They could not open the coffin and left. My wife couldn't help crying when she thought about the tragic experience at home. I didn't expect Lv Dongbin to come back safely. Thinking strangely, Lu Dong asked his children to find an iron axe and open the coffin. There was a jar inside, which was full of an altar of silver, and there was a note. Lv Dongbin picked it up and wrote four words: If you bite, you will not be ungrateful, and you will send a lot of silver houses to build a house. You will let my wife keep her room, and I will let your wife cry and heartbroken. It turned out that this was a little joke when Gou Bite helped Lv Dongbin in the dark. After the story spread, because of the homonym of "Gou Bite", there came the saying "A dog bites Lv Dongbin, but it doesn't know how to be good." 。