Serious Alien Worlds and Unreliable Travelers

Accidentally traveled to a serious other world, I met an old man who is both a system and an irresponsible portable person. He can also recycle equipment, send..., And the big turntable forces you to make krypton gold. I don't know what it is. Plus a time traveler named Huaji What else could it be? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.