Ancient China Earthquake
July 14, 2024
Zhang Heng Seismoscope – Shanghai, China - Atlas Obscura Seismoscope - Zhang Heng Ancient technology - mysterious ancient earthquake detector - YouTube Ancient China Earthquake
July 14, 2024
Zhang Heng Seismoscope – Shanghai, China - Atlas Obscura Seismoscope - Zhang Heng Ancient technology - mysterious ancient earthquake detector - YouTube Ancient China Earthquake