C28 Secret history of the underworld(1)

After returning to the "Nine Nether Church", just as Ceng Yanyun was about to go to his bedroom to comfort Yue Er, the King of Hell stopped him. Then, he dragged him into a room and closed the door.

"Ceng Yanyun, you are one of us now, so you should know about some things. If you want to develop smoothly in the future and be able to quickly and stably implement your plan