After collecting the time and space tunnel, the three of them returned to the real world four thousand years later, and as soon as they returned to the DFI Inn, they sensed a thick bloody gas in the air.

"There is corpse qi!" Bai Ze keenly felt the corpse qi,

"This Liu Yecheng is a smart person, why did we travel through time and space, and it was only a quarter of an hour before he left, and he actually took advantage of this time to come out and make trouble! But we have exposed our whereabouts?"

"We have changed into a mortal body, and we have hidden the immortal energy around us, even if Liu Yecheng's mana is strong, but it is just a monster that has been cultivated for more than 4,000 years, how can we break through the prohibition of the gods and immortals? We should not have revealed our identities yet, the yin qi here is very heavy, what day is today in the mortal world?" Yan Que asked,

"July 15. Bai Ze pushed open the window and looked at the dark night sky without stars and moons.

"One day in the sky, one year on the earth, we have been here for a few days, ignoring the day of July 15, the ghost door of July 15 is open, Wuzhou is located at the junction of the underworld and the mortal world, and the ghost gate has figured it out, today I am afraid that the underworld and the mortal world will be completely connected here, and the ghosts will walk at night. Yan Que said.

"Not only that, but generally speaking, on the fifteenth day of the seventh month, a passage will be formed between the underworld and the mortal world, which is what the world calls the ghost door open, but the time when this passage is open is only one hour. But judging from the situation in Wuzhou, this Wuzhou is a gap between the underworld and the mortal world, which is already full of yin energy, under the influence of the celestial phenomena on July 15, the yin energy and the underworld in this place are completely balanced, and the powerful yin energy is shrouded in the sky above the mortal world, covering the clouds and the moon to cover the heavenly reason, for the demons in the mortal world, it is a good time to make trouble, Liu Yecheng has known this truth for four thousand years. Qianyue looked at the pitch-black sky and said, although she is now a Qianyue Immortal in the Heavenly Realm, she has always been the envoy of the Yin and Netherworld Immortal Venerable, and the flame phoenix born in hell is related to the underworld, she knows best.

"However, although there is corpse qi, this corpse qi is just corpse qi, and it does not have much mana cultivation, it should be a zombie puppet controlled by Liu Yecheng. Bai Ze said,

"Even if it is a puppet, it can be regarded as Liu Yecheng's feet. Even if he doesn't show up, there are zombies hurting people, and we can't sit idly by. Yan Que said,

"Hasn't Asayue seen zombies since she ascension?" Bai Ze asked,

"No, there is no such thing as zombies in the underworld. Asaki said,

"So, I can see it today. Bai Ze said, the three exchanged glances, cast a spell and left the DFI Inn.

The yin qi soared into the sky, covering the clouds and the moon, blocking the heavenly principles, and countless demons and monsters in the Six Realms gathered here to stir up chaos.

Perhaps the mortals here have known since ancient times how dangerous the fifteenth day of the seventh month is for them, the road is free of cars and pedestrians, the doors and windows are closed, and the doors are hung with gossip mirrors or peaches and other things to ward off evil spirits.

In the eyes of mortals, the streets at this time were empty and unusually silent, but what Yan Que and the three of them saw was a bustling crowd of demons and monsters, greedily looking at every household with their doors and windows tightly closed, thinking about how to lure these mortals out, so as to absorb their essence and yang energy, to improve their cultivation, if they can absorb enough yang energy, they can even become evil demons, dominate one side, wouldn't they be happy.

Yan Que and the three of them hid their bodies and shuttled among the hundred ghosts, their target was not these shrimp soldiers and crab generals, what they were looking for was zombies, every year there was a day of July 15, and they would not interfere too much in this mundane matter.

"There's blood, it looks like zombies are hurting. Bai Ze said,

"Aren't zombies sucking the essence and yang energy of mortals?Why are there bloody qi?" Asakiki had never seen a zombie before, and he didn't know anything about zombies.

"Zombies are different from demons and monsters, they are resentful and angry because they are blind to death, they can absorb the yin energy of the moon, and they are infected with corpse poison or cemetery feng shui attributes, resulting in corpse transformation. These monsters are stiff, their nails black and sharp, their canine teeth sharp, and they are afraid of sunlight. During the day, they hide in damp and dark places such as coffins and caves, and haunt after nightfall, feeding on human blood, and those who are bitten by this monster, whether they are mortals or livestock, will be infected by the corpse poison, and the corpse will become a zombie. Bai Ze knew all the demons and monsters in the Six Realms, so he gave Asayue a popular science.