National Time Travel: I Rely on Summoning to Sweep Across Other Worlds

[Non-invincible text] + [Single heroine or no heroine] + [Destroy monsters and upgrade] + [Survival in a different world] + [Digitalization] A global cataclysm, 3 billion young and strong humans, simultaneously traveled to a world of Terra that used cold weapons. Good news, this is not the world of Terra as everyone knows it. This Terra consists of the material world, the half-spiritual half-data world, and the spiritual world. Bad news, no one named Terra is in a good place. After awakening a companion magic weapon at the beginning, how can we survive in the world of Terra where monsters are rampant, pollution is everywhere, and there are many crises? Other people's accompanying magic weapons are swords, guns, clubs, axes, bows and javelins... Feng Yi's companion magic weapon turned out to be the Black Crown! Black knights, white knights, giant gods, swords, shields, bows, spears... Spiritual servants, and eighteen kinds of weapons are all available! It turns out that Feng Yi is a summoner! When demons and ancient creatures descended from the sky and other players trembled, Feng Yi was fully armed, summoned an army of 100,000 Apocalypse Knights, and appeared in a Gundam. Feng Yi: "All fear comes from insufficient numbers... Numbers are the reason to become a king..." Feng Yi: "The demon gods and ancient creatures in the sky are no more than little Karami. Take my ship-cutting knife!"