What's Wrong with Me Summoning a Gundam?

Games and reality merge, and the era of job transfer for all begins. Lin Fan, who was known as the strongest quasi-swordsman, changed his profession and became the weakest profession, summoner. Lin Fan didn't care about the ridicule from others. Only he knows that he is a hidden profession, an arms summoner. … When the top experts in each profession are about to be wiped out by the world boss. Lin Fan was wearing an Iron Man armor, with a heavy particle ray gun in his left hand and a sky-locking moon-cutting weapon in his right hand. Miss 2B fell from the sky behind him. "To deal with this kind of **, my Gundam is not even worthy to be deployed." A certain top knight: "He is a summoner! He took a black knife, shouted Crescent Moon Chong, and killed my indestructible monster with just one knife. Is this reasonable?" A certain top archer: "Two thousand meters away, using an unknown weapon, he shot a red ray, killing Boos instantly??" A top warrior: "I thought I was armed to the teeth. It wasn't until he put on the same nano armor as Iron Man that I knew what it meant to be fully armed!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.