Introduction to the ruins of architectural components: Most of the architectural structural relics on display here - wall mud skins - were unearthed in the large gray ditch in the north of Miyagi City. They were abandoned during the expansion and reconstruction of Miyagi palace buildings. They are fully It reflects the structural form of palace buildings on rammed earth platforms in the early Shang Dynasty, and provides the most reliable footnote for the architectural structure record of "using wooden bones as walls and grass mud as skin" in "Kaogong Ji".