During the Yayoi period, the Japanese people began to interact with the Chinese Han dynasty, whose knowledge and technical skills began to influence them. The Japanese began to build raised-floor storehouses as granaries, which were constructed using metal tools like saws and chisels that began to appear at this time. A reconstruction in Toro, Shizuoka is a wooden box made of thick boards joined in the corners in a log cabin style and supported on eight pillars. The roof is thatched but, unlike the typically hipped roof of the pit dwellings, it is a simple V-shaped gable. Some authors credit the raised structure designs of this period to contact with the rice-cultivating Austronesian peoples from coastal eastern China or Taiwan, rather than the Han.