Previous chapter:
v3 Chapter 866 Underwater dragon king cannon
Next chapter:
v3 Chapter 868 Flame burning city
PREVIEW
... s.
This is the earliest artificially controlled, mechanically fired anchor. It uses a wooden box as a thunder shell, a putty sticks, and a black powder is placed inside. The firing device is not tied with a long rope and is detonated by a person.
Under the wooden box, a Sevastopol rope pendant has three iron anchors to control the depth of the mine in the water.
In 1590, China invented the earliest drifting thunder - the "water dragon king cannon" with a burning fuse as a ti ...
YOU MAY ALSO LIKE



























