Photo taken on Jan. 26, 2021 shows old city wall unveiled in Mengzhou City, C China's Henan Province. The ruins unearthed occupied an area of 3,000 square meters, dating back to Yuxia period, nearly 4000 years ago. It's also the first time to excavate archaeological site of Erlitou culture in C China’s Henan Province, which provides precious historical materials for research. (Bai Shuiping/Guangming Picture)
Photo taken on Jan. 26, 2021 shows old city wall unveiled in Mengzhou City, C China's Henan Province. The ruins unearthed occupied an area of 3,000 square meters, dating back to Yuxia period, nearly 4000 years ago. It's also the first time to excavate archaeological site of Erlitou culture in C China’s Henan Province, which provides precious historical materials for research. (Bai Shuiping/Guangming Picture)
Photo taken on Jan. 26, 2021 shows old city wall unveiled in Mengzhou City, C China's Henan Province. The ruins unearthed occupied an area of 3,000 square meters, dating back to Yuxia period, nearly 4000 years ago. It's also the first time to excavate archaeological site of Erlitou culture in C China’s Henan Province, which provides precious historical materials for research. (Bai Shuiping/Guangming Picture)返回搜狐，查看更多