Horror: Daytime Haunted House with Thousand Doors

My name is Tang Bo. For the sake of one million a day, I accepted a stranger's invitation to go to Thousand Gates Castle. I forgot to tell you, this place has another name: Thousand Doors Haunted House. Speaking of this matter, we have to start from the noon three days ago... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.