在古代，性教育一直是一个被忽视的话题。然而，对于一个即将出嫁的女子来说，性教育却是非常重要的。为了满足这一需求，古人创作了一系列的压箱底画，旨在为女子提供性教育知识。这些画作不仅详细描述了性行为的过程，还传达了一些道德与伦理的观念。

这些压箱底画作为古代性教育的一部分，对出嫁女子的性教育起到了重要的作用。它们向女子传达了性行为的基本知识，强调了夫妻之间的亲密关系，以及作为母亲的责任和重要性。同时，这些画作也传达了一些道德与伦理的观念，提醒女子要保持身体健康，尊重孕妇和母亲的角色。

总结而言，古代出嫁必看的压箱底画为女子提供了性教育知识。通过展示性行为的过程，传达了夫妻之间的亲密关系，以及作为母亲的责任和重要性。性教育是一个重要的话题，我们应该继续探索和改进，以满足现代社会的需求。

----------Introduction in English----------
In ancient times, sex education has always been a neglected topic. However, for a woman about to get married, sex education is very important. In order to meet this demand, the ancients created a series of pressure box bottom paintings aimed at providing women with sexual education knowledge. These paintings not only describe the process of sexual behavior in detail, but also convey some moral and ethical concepts.

These pressure box bottom paintings, as part of ancient sex education, played an important role in the sex education of married women. They convey the basic knowledge of sexual behavior to women, emphasizing the intimate relationship between husband and wife, as well as the responsibility and importance of motherhood. At the same time, these paintings also convey some moral and ethical concepts, reminding women to maintain physical health and respect the roles of pregnant women and mothers.

In summary, the traditional Chinese painting at the bottom of the box, which was a must-have for getting married in ancient times, provided women with knowledge of sex education. By showcasing the process of sexual behavior, it conveys the intimate relationship between husband and wife, as well as the responsibility and importance of being a mother. Sex education is an important topic that we should continue to explore and improve to meet the needs of modern society.