Zhan Xiaoxiao has played Ya Po many times, so he has some understanding of the complex emotional changes of the characters. In ancient times, whether it was living, doing errands, or living, it was almost inseparable from the tooth shop. Dental is not a dental clinic as it is now, but an intermediary industry similar to what it is now. In ancient times, in order to facilitate management and to have a department in charge, the dental store was established. The person in charge of the Yamen is either an official person or is personally appointed and dismissed by the governor of the local yamen. All those who do business or open shops in the local area need to be registered with the dental store, and even some industries that are not public need to be recorded in the dental store, otherwise it is illegal. In addition to registering the entry and exit of merchants and large businesses in and out of major stores, the dental store is mainly responsible for intermediaries and buying and selling people.

Although the imperial court strictly forbade the buying and selling of human beings, it did not prohibit the buying and selling of human beings by the yamen or some departments. As a department with an official background, the dental department allows that it can openly buy and sell human beings. However, this kind of human trafficking is not only subject to detailed registration, but also has certain rules and regulations. It is strictly forbidden to sell women from good families into brothels, and it is also strictly forbidden to sell the family members of official eunuchs to ordinary people or wives. The general business of buying and selling human beings is mainly to introduce or sell the children of ordinary people who cannot support their children to large families or domestic servants. Of course, there are also large population transactions twice a year, especially in large places, and there will be quite a stir every time the time comes. The yamen would regularly sell the family members of some convicts or the immediate family members of major cases, and sometimes they would also sell some children of poor families who could not afford to pay taxes. At this time, there was no restriction on large families to buy people as little wives or servants, and brothels were also allowed to buy them back as prostitutes. Buying and selling human beings is like buying livestock, these people are not treated as human beings at all, and the transaction also needs to be operated by people who are in the tooth shop.

Another reason why dental care is needed is to worry that the buyer and seller will have a disagreement afterwards. After having a dental dealership, both parties write down the contract in triplicate under the supervision of the dental dealer, and the buyer and seller and the dental dealer each have one copy to prevent anyone from doing tricks or regretting it afterwards. Not only can the dental company supervise the performance of the respective obligations, but also prevent losses and claims caused by someone's remorse after the fact. Therefore, when ordinary businessmen do business, ordinary people like to spend a little more money to ask the people of the dental shop to do notarization when they buy and sell livestock or important items.

The division of labor among the people in the dental shop is very detailed, and some things that are not suitable for men to do, or that are inconvenient for men to meddle in, are handed over to women to do. For example, introducing marriages, weddings and funerals, helping to give birth to children, and so on. These things are either unsuitable or inconvenient for men, so women are needed to complete them, and the women who do these jobs are collectively called Yapo. They are not only intermediaries who introduce women to jobs, but also some of them are professionals in a particular field. In ancient times, the status of women was very low, but they also needed to live and consume. During the Song, Yuan, Ming and Qing dynasties, the system of etiquette and religion was very strict, and women were almost strictly forbidden to show their heads, and women were not allowed to directly trade face-to-face with others to do business. In order to make a living and support the family, these women had to ask Ya Po to help introduce customers. Large families have their own embroidery girls or cooks, and small families can't afford to hire their own people, but medium families have needs. If the girl wants to get married, she needs dowry embroidery, and her children need to do wedding wine and need a cook, which requires a cook to buy embroidery through Yapo. There are some women who embroider or cook for others in order to make a living, and they are embarrassed to come forward and shout on their own, and they also need Ya Po to introduce them to business. These are all small-scale, and the most famous of the Ya women are the three women, the matchmaker, the Xi woman and the midwife.

Matchmakers are known to everyone that they are professionally engaged in introducing marriages. In ancient times, transportation, communications, etc. were backward, so the average person only had small-scale contact within the scope of their own industry. As a result, there are not many people who know each other, and the communication is not very extensive. Their children can't always marry close relatives, so someone needs to be introduced, and that's where matchmakers come from. The matchmaker collects the information of some men and women who have not yet started a family, distributes it reasonably according to the characteristics of each person, and introduces them to the right families. As long as the adults of both parties agree, there is no need to ask the children's wishes, and the children's marriage is directly decided, which is the most famous and common "parent's order matchmaker" in ancient times. The matchmaker plays a key role in this process, whether the marriage is successful or not, and whether the life of the young couple is suitable in the future depends on the introduction and communication of the matchmaker. A good matchmaker can allow everyone to find a suitable partner and live a harmonious and beautiful life in the future. If you meet a matchmaker with a bad conscience who only makes money, it will be difficult for the young couple to say in the future.

Xi Po, also known as Lang Po, is a person who is professionally responsible for presiding over weddings and funerals. In some places, matchmakers also serve as Xi Po, but in a practical sense, Xi Po and matchmakers are two industries with completely different work natures. Generally speaking, the bride and groom need to be paired one-on-one, but the bride and groom are a man and a woman, and the two are married women. These two Xi Po are not only work partners but also life partners, so they are generally two sisters or two parents, and there are also two mothers and daughters or two mothers-in-law and daughters-in-law. One stays at the man's house to decorate the new house, and the other goes to the woman's house to help the bride's mother put on the bride's makeup. Don't underestimate the bride's makeup, this is a technical job that ordinary people can't do. In ancient times, women lacked knowledge of cosmetics and maintenance, especially in some small and medium-sized households, and the bride may not be able to make up her own makeup. The bride wants to go to her mother-in-law's house, and she wants to make a good impression on her parents-in-law, not only beautiful but also dignified, so she needs to make up for herself, pull out her eyebrows, shave the fetal hair, and so on. In order to serve the bride, Xi Po told the bride the precautions for meeting her parents-in-law. Getting married in China is not only a matter for the younger couple themselves, but also a major event for the two families, and if something goes wrong, it will have a bad impact on the family, so no one wants to make a mistake. But sometimes there are really some small troubles or accidents, which requires Xi Po's flexible ability to deal with them. The Xi Po who goes to the bride's house must accompany the bride to the man's house, and teach the bride in a whisper while supporting the bride. The bride who is waiting at the man's house must not only arrange everything, but also accompany the groom to greet the bride at the door of the man's house before the bride enters the door. At the door, the two Xi Po will also represent both men and women to say a few words, some places are singing, some places are saying auspicious words, and more places are pairs, which all depend on the ability of Xi Po and the economic strength of both families. After the bride enters the door, she can be sent to the new house only after completing the worship and meeting her parents-in-law under the guidance of the Xi Po. One of the Xi Po will stay in the new house to talk to the bride, and one will be outside the area to help the groom block the wine. Generally speaking, the Xi Po who stays in the new house to accompany the bride is the one who has just put on makeup for the bride, and the Xi Po who helps the groom to block the wine outside is the Xi Po who arranges the wedding banquet at the man's house. At this time, the Xi Po who stayed with the bride also had an important task, that is, the task of teaching the bride how to do things at the end. In ancient times, the girls who got married were very young, and the family would not teach this kind of thing very clearly, so it was necessary for the Xi Po to explain to the bride at the last time. Some Xi Po will also have some booklets in their hands, and they will show the bride the text with pictures while explaining, so that the bride can understand and adapt to it as soon as possible. It is not until the bride and groom actually enter the cave house that the task of the bride and groom is completed, and afterwards they will receive red envelopes of different sizes as their reward according to the satisfaction of the parents of both parties.

A midwife, also known as a midwife, is a profession born in the actual environment where medical technology is not developed. In ancient times, there was not only a very serious system of etiquette and religion, but also a series of stereotypes and bad habits that modern people do not understand. From the time a woman has a child, until the child is born, and the mother has completed the confinement, the whole process needs the help and guidance of the midwife. Wealthy families have their own midwives at home, who can provide 24-hour service. Small families can't afford to hire a subordinate or a midwife, so they have to deal with it themselves. However, as long as the middle-sized family has the financial ability, they will definitely ask the midwife to come to the house regularly to check the pregnant woman, especially when the first child is born, everyone is very nervous. This requires careful explanation and detailed explanation by the midwife, so that the pregnant woman can give birth smoothly and the child is born healthier. The midwife should not only determine whether the woman is pregnant, protect the child, deliver the child, do a good job of postpartum care for the woman, and complete the confinement for the woman, etc.

In ancient times, there was a proverb: "The feet of the matchmaker, the mouth of the happy woman, and the hands of the midwife." It means that a good matchmaker should walk more, walk around more for both men and women, inquire more about the woman's children, and ask more questions about the man's children, so the matchmaker's feet are expensive. Xi Po officiates at the wedding by relying on a mouth, saying more good things and saying more auspicious words, and the right feet are the best, so everyone likes Xi Po to say more auspicious words. The midwife is an experienced person, as long as she is willing to do more and help in important things, adults and children will be better, so the midwife's hand is the most precious for the family to serve.