The System and I Are Both Useless.

It's just a normal time travel, and then there's a system. But I am a loser, and this system is also a loser. People fight, fly into the sky and escape, overwhelming mountains and seas. I can only sap and stab. They have a system of various materials, exercises, pet eggs and old men. My system is at most a tour guide and appraiser! This is my first time writing a novel, so it's probably GG. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.