I recommend you to read "Steam Sword Rain". In this sci-fi novel, a transmigrator brought super steam technology and martial arts souls to the Ming Dynasty, establishing an era of martial arts that traveled thousands of miles and swept through the caves. The main characters were clad in golden armor and could also fight without any obstacles, which fulfilled the requirement of the main character's soul being in golden armor. I hope you like this fairy's recommendation. Muah ~😗