It is said that Li Shimin, Emperor Taizong, made concubines for several beautiful women in the room, but the room was unbearable. I expected that Fang's wife was a shrew and refused to agree. So Emperor Taizong sent eunuchs to order Mrs. Fang with a pot of "poisoned wine". Instead of accepting these beautiful concubines, they were given poisoned wine. Fearless, the lady took the "poisoned wine" and gulped it down. As a result, she didn't die. It turned out that the pot was filled with vinegar, so the emperor used it to test her and made a joke. So the story of "jealousy" has been passed down through the ages as an interesting story. But this allusion is only a legend, and there are not many written records. It may be made up by later generations, but it may not really come from this.

In the Qing dynasty, some people thought that jealousy originated from a prejudice. In some southern areas, people think it is not appropriate for a family to brew two jars of vinegar at the same time, otherwise one jar will be broken. Therefore, a family should not have two jars of vinegar at the same time. This is a metaphor: a family can only keep one wife, otherwise there will be jealousy between wives and concubines. As early as the Northern and Southern Dynasties, the phenomenon of "bad vinegar" was mentioned many times in Qi's Yao Min Shu, which shows the difficulty of brewing. But it is far-fetched to say that two pots of home brew will destroy one pot, but it reflects the people's hope for monogamy.

Some people think it comes from buying vinegar and vinegar. Vinegar is the main sour seasoning in ancient China, which can be extended to acid and sour taste. It is sour and painful, so people associate jealousy with jealousy as a metaphor for sadness. Sometimes called jealousy and jealousy.