大明宫遗址公园
da ming palace ruins park
考古遗址公园
Important archaeological sites
圆明园遗址保护
Preservation of the Yuanmingyuan Ruins
船棺遗址
relicsof the boat-shaped coffin
绰墩农业遗址
Chuodun archeological site
绰墩遗址
Chuodun site
chuodun archaeological site
Chudun site
大井矿冶遗址
the Dajing site of mining and smelting