As for another saying that Japan does not conduct archaeology, there is another saying. In fact, the cause of archaeology was also carried out in Japan at the beginning. However, there was once a famous Japanese archaeologist who made a very famous forgery in an archaeological undertaking, which had a great influence on Japanese archaeology. Since this incident, Japan has gradually stopped its own archaeological career.
Of course, for many centuries, people have been entangled in the question of whether Xu Fu is the ancestor of Japan. When Japan was relatively weak, they still recognized it, especially during the Tang Dynasty in China. Moreover, in the later Song Dynasty, many articles also pointed out that the Japanese once thought Xu Fu was their ancestor, because at that time it was probably because they were still weak and wanted to please some powerful people.
So they personally admitted that they were descendants of Xu Fu, in order to curry favor with the relationship of the Tang Dynasty at that time. But after Japan became powerful, they did not make it clear that they were descendants of Xu Fu or that Xu Fu was their first emperor.