Eighteen Ghost Emperors of my ancestors, how dare you make me live in terror?

A global horror has descended, and everyone must complete a terrifying challenge on their first day of adulthood.
On the day it was Lu Ye's turn, he took a car back to his hometown overnight and knelt in front of his ancestral graves, weeping and wailing.
"Ancestors above, I am an unfilial son, sob sob sob, the Lu family line has completely ended with my generation!"
"I'm going into the dungeon tomorrow, and I don't plan to come out alive."
"From now on, no one will burn paper money for you!"
That shout woke up all the ancestors lying in the 18 old graves of the Lu family.
Instantly, billowing black smoke rose up, and the sky and earth changed color.
"Crying, crying, all you do is cry! You've cried away all the good fortune of our Ghost Emperor clan!"
"We've kept this from the child for so long; it's time to reveal the truth about our eighteen ancestors, the Ghost Emperors."
"Great-grandson, don't be afraid, your great-grandmother will prepare a basket of Ghostly Emperor Weapons for you."
"Hmph! Do you think the Lu family would let ghosts bully us?"
Our ancestors have shown their power; I can just lie down and relax.
With the backing of his Ghost Emperor ancestor, Lu Ye discovered that the bizarre dungeon had a different way of playing.
"Have you heard of Lu Batian, the Ghost Emperor? He's my great-great-grandfather."
"An S-rank female ghost? Oh, please let her know."
"My great-grandmother has taken a liking to her as her granddaughter-in-law."