In the Prehistoric Times, Even Breathing Is Getting Stronger

Lin Yun traveled to the prehistoric world and gained an infinite breakthrough system at the beginning. He was making breakthroughs when he was eating, making breakthroughs while sleeping, and even when he was breathing and blinking, his cultivation was breaking through. After countless guilds, Lin Yun looked up to the sky and screamed: "God, can you stop torturing me like this!" "If I continue to break through, there will be no room for labor in this world!!" "Please let me lower myself to a lower level!" "I really don't want to break through..."