Hellow guys, Welcome to my website, and you are watching Ancient Earthquake Detector: Zhang Heng’s Genius! #ZhangHeng #AncientInventions #Seismoscope #facts. and this vIdeo is uploaded by VDM Project at 2025-05-25T02:01:12-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
