Beast Tamer is invincible: Others spend money, but I spend my life!

Story of: Beast Tamer is invincible: Others spend money, but I spend my life![Beast Taming + Upgrade + Evolution + Invincibility + Pets + No Female Lead to Focus on Business] Xu Ming traveled to the beast taming world, and encountered a life-and-death crisis at the beginning: Low talent? Who said that the iron-eating beast is a cute beast tamer? It's okay, others spend money but I spend life: Kill monsters, demons and other aliens, and plunder their lifespans. Consume the lifespans of aliens to add points: accelerate the growth of pets or beast tamers. Iron-eating beasts... Iron-eating beast commander... King... Iron-eating war god mutant skeleton... Lich... Undead monarch Dragon eggs are difficult to hatch? Is it enough to speed you up for 10,000 years? ... Monster tide? Warcraft disaster? With your life, I will build my invincible road.