Abyss: Demonized Siheyuan

Traveling back to that special era when supplies were scarce, I found that the world had actually been infiltrated by the abyss. What was more poisonous than the abyss was that those who were full of love for the courtyard were also there. System awakening, mastering various spells and skills, he just wants to live well in this world, preferably more comfortably. This should be a novel that can be read. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.