Invincibility Starts from Copying Everything

Zhang Jun was reborn in another world and started as a useless son-in-law. Copy everything and blow up the heavens! It took ten years of physical training to reach the tenth level? Zhang Jun copied it and changed it to a hundred times in one second! Can't you practice it after studying the magic secrets for hundreds of years? Zhang Jun copied it and reached perfection in one second! "Your skills are very good, but the next moment, they are mine!"