C1040 Papyrus

"What? Steel concrete?" Mo Lingyan was dumbfounded. "Isn't this too funny? Rebar concrete was only invented in the 19th century. Where did it come from thousands of years ago? It transmigrated? "

Behind it. Mike had an awkward expression on his face. He knew about this news as well. When the reinforced concrete giant stone array was exposed, the media in Ancient Ruins thousands of years ago..