Fragments of pottery excavated in the Shang Ji Fang Ying Zi site were also compared with that excavated in the San Zuo Dian site, which indicated that they might have culture exchanges.

• 本文还将上机房营子遗址与三座店遗址的出土陶片进行比较分析，发现夏家店下层文化晚期两地可能存在着文化交流。