![](http://www.ecns.cn/hd/2023/09/25/43aa11d4718c42a0bb50ede39ee9a026.jpg)
A staff member introduces the archaeological tools during an open day event at the archaeological site of Beijing's Old Summer Palace, or Yuanmingyuan, Sept. 24, 2023. (Photo: China News Service/Tian Yuhao)
As part of the 13th Beijing Science Carnival, an open day was launched at the Danbo Ningjing archaeological site on Sunday.
![](http://www.ecns.cn/hd/2023/09/25/9173e3e747d9428abb14268e12bff853.jpg)
Artifacts are documented after they are unearthed during an open day event at the archaeological site of Beijing's Old Summer Palace, or Yuanmingyuan, Sept. 24, 2023. (Photo: China News Service/Tian Yuhao)
![](http://www.ecns.cn/hd/2023/09/25/87b651b1107c46feb898ae7fc973e070.jpg)
A staff member introduces a site plan during an open day event at the archaeological site of Beijing's Old Summer Palace, or Yuanmingyuan, Sept. 24, 2023. (Photo: China News Service/Tian Yuhao)
![](http://www.ecns.cn/hd/2023/09/25/4fee6b74966f4ef0b698ce162e9ce502.jpg)
A staff member introduces an excavation site during an open day event at the archaeological site of Beijing's Old Summer Palace, or Yuanmingyuan, Sept. 24, 2023. (Photo: China News Service/Tian Yuhao)
![](http://www.ecns.cn/hd/2023/09/25/f56760c35d9046989cdce281161a4fb1.jpg)
A staff member introduces an excavation site during an open day event at the archaeological site of Beijing's Old Summer Palace, or Yuanmingyuan, Sept. 24, 2023. (Photo: China News Service/Tian Yuhao)
![](http://www.ecns.cn/hd/2023/09/25/c55b610401894775b879fd563e7fa741.jpg)
A staff member introduces an excavation site during an open day event at the archaeological site of Beijing's Old Summer Palace, or Yuanmingyuan, Sept. 24, 2023. (Photo: China News Service/Tian Yuhao)