Everyone takes a bath almost every day, but do you know the origin of bathing culture? Bathing was called "bathing" in ancient times, which means washing the body with water; The ancients also called bath water "soup". In Chinese characters, it is neither "mu" nor "bath" but "ying" that retains the ancient bathing image. In Oracle Bone Inscriptions, "baby" means a person bathing naked in a bathtub. Some scholars believe that this word reflects the bathing habits of the ancients in the pre-Qin period in China. Bathing is a symbol of civilization. China has a long history of bathing and enjoying the cool. According to Song Gaocheng's "The Origin of Everything", bathing culture appeared in China in the era of "Three Emperors and Five Emperors", and Gao Xin's family took a bath before China people. In the eyes of the ancients, bathing is a very serious matter, and sometimes it is mysterious, sacred and exquisite. In ancient times, bathing required changing clothes, and even the frequency and times of bathing were stipulated. When the guests come, please invite them to take a bath first, and then set the banquet. Modern people call it "welcome" to entertain guests from afar, which is the heritage of this custom. In the Han dynasty, civil servants were required to take a bath every five days. At that time, all officials, big or small, went home on holiday. The day when it is the turn to take a bath is called "taking a bath", which is also the origin of the modern civil servant vacation system. In midsummer, some emperors simply take a long vacation and let everyone go home to take a bath for the summer. In ancient times, there were obvious grades of bathing, and mixed bathing between men and women was not allowed. The "Yuanyang bath", which is quietly popular among modern fashion couples, was strictly forbidden in the early days, otherwise it would be "rude". In the Zhou Dynasty, one of people's moral codes of conduct at that time was to prohibit couples from taking a bath together. The Book of Rites is an important treatise selected by the Han people to record the laws, regulations and customs in the pre-Qin period. Among them, "Naize" has such words, when men and women take a bath, they "dare not take a bath". The traditional explanation of "hissing", that is, the modern bathroom, means that couples can't use the bathroom. In fact, men and women are required not to take a shower. Because the ancients thought that bathing with women was not only "impolite", but also bad social atmosphere, which would lead to imbalance between yin and yang and poor health.