Interstellar Mercenaries Reclaimed the Earth, I Was Shocked by Passers-By

I am Yi Chen, an ace mercenary at the fifth level of the mortal realm of the Star Universe Mercenary Company. I have completed countless mortal realm missions. After many selections, I have obtained the qualification to open up wasteland on the Origin Star once in an era in the universe. When I was confident and followed the team members and the boss into the dungeon, I realized that in this dungeon called "Earth" by the local indigenous people, I was just a shocked passerby...