Matt and Jeremy see if a 2,000 year old earthquake alarm could have saved lives. The Didong Yi was a seismometer developed by Zhang Heng and was intended to provide information to the Imperial Court when an earthquake occurred. This would help dispatch relief aid to those in the region who were affected.

Matt and Jeremy see if a 2,000 year old earthquake alarm could have saved lives. The Didong Yi was a seismometer developed by Zhang Heng and was intended to provide information to the Imperial Court when an earthquake occurred. This would help dispatch relief aid to those in the region who were affected.