God-Tier System: From the Start, I Sign In and Get an Armor Summoner

[God-Tier System + Passionate Xuanhuan + Fast-Paced Action + Gun God + Ruthless Decisiveness] [System] A hundred years ago, alien monsters invaded. The forces of justice never showed up, so humanity had no choice but to build underground bases and pour resources into developing technology to fight the monsters. Yet humanity remained at a tremendous disadvantage. Then Chen Xiao, who had been asleep for a hundred years, awoke. With his God-Tier System, he changed the balance of power across the entire starry sky, making it tremble! [Xuanhuan] Billions of years ago, Pangu split chaos apart... Billions of years later, the Demon Lord discovered another world... “When the flowers on the other shore have all bloomed, the time will come to defy the Dao and wage war against Heaven!”