Peeping Back In The Past

According to historians, this place dates back to the 2nd millennium BC, that is China’s Bronze Age. Chinese scholars believe that during the Han Dynasty(206 BC to 220 AD) people chose this type of habitat to live in and with dynasties that came later on after Han Dynasty people started to improve their condition of living by making further improvements. But it was during Ming(1368 to 1644) and Qing(1644 to 1912) that the construction of these places made the most improvement. So much history revolving around the place and we are reading about this place today. Why is that?