1. "From the third generation" refers to the Xia, Yin and Wednesday generations.
2. Yu Xia Shang and Zhou Dynasties. Before the summer, there was a Yu dynasty? (? -? )?
"Six Dynasties" refers to Tang Yu, Xia Shang and Qin Zhou. Before Yu, there was a "Tang"? ( ? ) wow! *?
There are no cultural relics, only sporadic words in ancient books record that history. It just exists in a hazy and unknowable way. In this dynasty, before the invention of the time machine, we can only expect more ancient books to be unearthed. I don't know that there are very few documents about the burial of Qin Shihuang's mausoleum, and I am a little excited to think about it (☆ _ ☆)