I, the Tomb Keeper, Have Signed on the Battlefield for Forty Years

Zhang Dong traveled to a world where demons were rampant, woke up at the ancient battlefield site, and became a tomb keeper. I accidentally got the mausoleum sign-in system. The stronger the tomb owner is, the richer the rewards will be. Regardless of the weak or the strong, just dig a hole and bury it to sign! Sign in at the tomb of the demon clan and get the magic-transforming technique as a reward. Sign in at the graves of Taoist disciples and receive the Heavenly Master Talisman as a reward. Sign in in front of the lonely ghost's grave and get a ghost whip as a reward. … Zhang Dong has grown up in a wretched way, signed on the battlefield for forty years, obtained countless magical weapons, and his cultivation has reached the heaven. That year, there was a great war between immortals and demons. Tens of thousands of powerful people fell into a melee, and the flames of war spread to the ancient battlefield ruins. At this time, Zhang Dong silently picked up the shovel and dug out grave pits one after another... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.