Everyone Becomes a God: Starting with a Fireball Spell

(Sort of a survival story, a lord story, a true farming story, a management and construction story, and a story about everyone ascending to godhood.) Everyone transmigrates to another world! Each person arrives on a floating island and randomly receives a divine kingdom core and a spell. Zheng Jiang gets the Sun God divine kingdom core and the Fireball spell. And so... When monsters attack, everyone else is busy establishing the Five Fireballs Cult, while Zheng Jiang is already holding a Gatling gun, gently squeezing the trigger. When the floating island wars begin, everyone else is still painstakingly drawing magic circles, while Zheng Jiang has already set up a missile launcher vehicle to politely reason with them using nuclear firepower. When it comes to spreading the faith, everyone else is still trying to declare that they alone possess the truth, and that whoever believes in them will have eternal life. But Zheng Jiang holds scripture in his left hand and a cannon in his right, shouting, “The truth is always within range of the cannons.”