The End of the World: I Use Fullmetal Alchemy to Dominate Everything

[At the end of the world, the steel flames burn the sky, and the remaining body is made into a divine weapon! When Yin Yun in the abandoned house was chewing instant noodles and chasing "Steel Refining", the whole building suddenly fell into a bloody apocalypse. With his right arm disabled, he was forced into a desperate situation by the tide of corpses, but his palms were ignited with blood and formed into a formation - the rock formations on the ground instantly turned into hundreds of steel spears, stringing the monsters into bloody candied haws! "Edward's ability can actually be realized?" The right arm of the mechanical armor smelted the rails into a 40-meter ship-cutting knife, and crushed the liquid metal python controlled by the villain with his bare hands. When the eye of truth glimpses the origin of matter, the vacuum trap swallows the entire army, but the price is the severe pain of retinal bleeding... In this wasteland cage where flesh and steel are intertwined, who is the chess piece that has been forged?