Spirit energy cannon



The spirit energy cannon is a large weapon developed and used by the Earth Empire to conduct long-range artillery warfare. Firing spirit energy from harvested spirit vines, it is capable of destroying a hill with one shot.

History
The technology used to create the cannon was developed by Varrick, though after he defected from Kuvira's army, Baatar Jr. continued the project and manufactured the cannon with the aid of Zhu Li, although she tried to slow down its production by systematically sabotaging it as well.

In 174 AG, the weapon was assembled at a factory not far from Zaofu. The day before its official test run in the presence of Kuvira, Baatar Jr. tried it out in private to make sure everything would run smoothly. After Zhu Li initiated phase one, the condenser backed up and he ordered the cannon to be shut down. When the override failed, the cannon was at risk to blow up, though Baatar Jr. prevented that from happening by manually dismantling part of its circuitry and discover the malfunction had been caused by a cracked channeling ring. Not taking any chances, he ordered his crew to disassemble to machine in order to check everything for the official test the following day.



The next day, the cannon was presented to all the soldiers and crew present at the factory. When Baatar Jr. fired up the weapon on Kuvira's orders, the machine malfunctioned once more. As he opened up the smoking engine, he quickly deduced that the trouble was caused by a missing distributer pin. After Kuvira discovered Zhu Li had stolen it to sabotage the machine, hoping it would explode, Baatar Jr. put it in place again to resume the test. Just as the cannon was about to fire, Lin, Suyin, Wei, and Wing disrupted its aim by rattling its sides with their earthbending, causing the blast to destroy a hill as opposed to an abandoned town as intended.

Trivia

 * The spirit energy cannon resembles the Schwerer Gustav, a World War Two Nazi German railway gun.