A Paleolithic culture from around 30,000 BC constitutes the first known habitation of the islands of Japan.[16] This was followed from around 14,500 BC (the start of the Jōmon period) by a Mesolithic to Neolithic semi-sedentary hunter-gatherer culture characterized by pit dwelling and rudimentary agriculture.[17] Clay vessels from the period are among the oldest surviving examples of pottery.[18] From around 1000 BC, Yayoi people began to enter the archipelago from Kyushu, intermingling with the Jōmon;[19] the Yayoi period saw the introduction of practices including wet-rice farming,[20] a new style of pottery,[21] and metallurgy from China and Korea.[22] According to legend, Emperor Jimmu (grandson of Amaterasu) founded a kingdom in central Japan in 660 BC, beginning a continuous imperial line.[23]