No matter how frequent and far-reaching the cultural exchanges between Japan and China are in history, the development of Japanese culture has many characteristics since ancient times, many of which are different from those of China and the West. In the process of the formation and development of Japanese culture (including sex culture), there are many seemingly contradictory phenomena, but they are harmoniously combined to form a unique East Asian culture, which can be said to be rare in the world. Therefore, American philosopher Moore believes that Japanese culture is "the most mysterious and bizarre of all great traditions". This contradiction and unity are first manifested in the absorption and independence of culture. Historically, during the period of 1000 years, the Japanese absorbed a great deal of China's Datang culture. 1868 The Tokugawa regime collapsed, and after the Meiji Restoration began, Japan entered a "civilized" period. During this period, the Japanese introduced western civilization according to the method of 1 1 century ago, and made great achievements, which laid the foundation for building a modern country. The formation and development of any culture are influenced by many factors. History at home and abroad, as well as Buddhism, Confucianism and even Christianity have all played a role in Japanese culture. Japan is changing, but it has never really broken away from its oldest local cultural roots. This situation can be seen from many phenomena in Japanese society. Now TV, air conditioning, cars, computers, going abroad for holidays, etc. It has penetrated deeply into ordinary families in Japan, and the surface of Japanese life has changed beyond recognition. Nevertheless, behind the curtain of modernization, there are still many things belonging to Japanese native culture. From a deep analysis, Japan is still a traditional country. For example, they like to eat raw and cold food and advocate the original flavor; Like plain color and natural taste; Strong family power, family consciousness and group consciousness; Folk beliefs and witchcraft prevail; Women's meekness and dependence on men; Want to get rich, can get rich, but after getting rich, I am at a loss; Wait a minute. This contradiction and unity are manifested in the input and output of culture. Japan is a nation that attaches great importance to and is very good at absorbing and introducing other cultures. From the "large-scale innovation" in the 7th century to the "Meiji Restoration" in19th century, it greatly promoted the development and progress of Japan. Comparatively speaking, China is not very good at absorbing the cultures of other countries and nationalities in history. It is an advantage to have a long history and a vast territory, but if we only pay attention to output but not to input, and do not pay attention to absorbing nutrition from the cultures of other countries and nations and constantly developing ourselves, then this advantage will also go to the opposite side. With the rapid growth of Japan's economy, Japan's awareness of promoting its own culture abroad has become stronger and stronger, and it has put forward a strategic slogan, which is what former Japanese Prime Minister Nakasone Yasuhiro called "internationalization". In this regard, the Japanese government has invested a lot of money. According to a statistic in the 1990s, the annual budget of overseas cultural exchange projects sponsored by Japanese official institutions, such as inviting or sending scholars, overseas students and carrying out large-scale cultural activities, is 654.38 billion yen. The International Exchange Fund under the Ministry of Foreign Affairs of Japan mainly encourages and subsidizes projects related to Japan, such as Japanese overseas education, research, translation and publication of Japanese cultural and literary works, or cultural activities related to this. The government has invested heavily in promoting its own culture and achieved remarkable results. These measures are closely related to the world-famous tea ceremony and flower path in Japan and the high-quality translation of Japanese literary works in many languages. Another aspect of contradictory unity is the old official culture and folk culture in Japan. In ancient Japan, no matter how much the government emphasized foreign culture, folk culture remained largely reserved. For example, in Heian period (794- 1 185), when the culture of the Tang Dynasty was strongly advocated, all Japanese literati men wrote in Chinese, while women did not, and as a result, they became pioneers of Japanese native literature. In a long historical period, people can do whatever they want within the boundaries of many fields allowed and controlled by the government. There, actors dressed as women, male prostitutes, prostitutes and woodcut artists can please God. The urban folk culture in the Edo period, especially in the more prosperous17th century, is inextricably linked with this narrow world of enjoyment. Many writers, musicians, actors and painters are in and out of this "lewd world" which is despised by the government but deeply loved by the people. Violent entertainment and absurd pornography are still important means for people to vent their feelings under the strict control of the government. No matter how the times change, the fundamental change of this culture is very small, and the importance of this phenomenon cannot be underestimated. Finally, the unity of this contradiction is manifested in the elegance and vulgarity of sex. It should be considered that, on the whole, the Japanese nation is an elegant nation. In daily life, the Japanese are "gentle, docile, polite and gentle". They use "gentle human feelings" to express themselves, not "dry and blunt theoretical thoughts" Compared with most other ethnic groups, the Japanese are more bound by feelings. For example, when two people argue, westerners often say angrily, "don't you understand what I mean?" If he were Japanese, he would hide his anger and unhappiness under a polite mask and say, "Don't you understand my feelings?" Generally speaking, the Japanese are more tolerant and often maintain superficial harmony in different ways. Conflicts are always covered by the veil of gentleness and politeness. This cultural phenomenon is of course manifested in all aspects of social life, as well as in the sexual problems of men and women. In the process of sexual intercourse between men and women in Japan, even prostitutes, people pay attention to rules and etiquette, and cover up the most vulgar sexual behavior with an elegant coat, otherwise they are afraid of being looked down upon by others, and most Japanese are very proud. In this respect, it seems that there are many similarities with the "gentleness, kindness, courtesy, frugality and forbearance" advocated by the ancients in China, but the difference is that the Japanese pay more attention to forming this attitude into an external etiquette, and it also has a rough and violent side, which forms a sharp contrast.