Sure, here is the translation:
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A fierce red light shot up to the sky, causing the entire ancient castle to shake violently as if an earthquake had struck. Even from the other end, people could clearly feel the power of this Magic Cannon blast.
As the thick smoke cleared, the grand gate of Saint Er Magic Academy had completely vanished, and even the tall walls had collapsed for dozens of meters, leaving behind only ruins.
"Wow, the power is too strong!" Fang Jueyu patted the Magic Cannon beside him; the barrel was a bit hot. The power of that shot just now was probably equivalent to a casual strike from a top Source Energy User.
"Tsk, tsk, tsk, should I go to the Space-Time Store next time to get a few more powerful Magic Cannons? Install one in every city in Huaxia, then whether to deter other countries or to counter extraterrestrial civilization's invasions would be no big deal!"
"Cough, cough, cough!" The group of mages struggled to crawl out from under a pile of rubble.
