Who will attack after inviting the wrong grandmaster?

Xiao Xuan is the grandfather who was mistakenly invited back by the underworld in the novel After Inviting the Wrong Grandpa, which is the attack in the novel.

The main content of Inviting the Wrong Ancestors is that the secluded family is surrounded by skyclan and is in danger. A group of elders had no choice but to invite their innate strength to seal at the foot of Yaoshan Mountain. According to legend, the original ancestor killed the great powers of other nationalities and threatened to take Conan, the destroyer. Finally, it was calculated and sealed at the foot of Yaoshan. After grandpa came out, everyone found that this was not quite the same as the rumored description. It is said that granddaddy has black hair and eyes, and he is full of blood. People dressed in snow clothes, silver hair and red eyes, are covered with the fragrance of snow lotus. He is gentle and honest, with a slight smile on his mouth, and he is unparalleled in beauty, just like a fairy. The lyre sounded, and the six worlds were shocked. skyclan retreated. The ancestors of ancestors were offered delicious food, and twelve boys and girls were also given to them. Of course, the kind grandfathers did not eat, and they all became apprentices. Until one day, Yaoshan shook, and out came a big devil in an ink robe. The elders in your family suddenly realized that the one at home was not their grandfather, and they seemed to have invited the wrong grandfather.