MTL - Rebirth Turn of the Century - Chapter 813 Certainly

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.

A question I often ask myself, is the human desire for self-destruction never going away?

Travel through the endless apocalypse world, and find the answer behind every kind of demise!

- Description from novelbuddy

In an exhilarating twist of fate, Jiang Chen traverse into a fantasy realm novel he read, taking on the role of the notorious Holy Son in a riveting tale. But here’s the catch – he’s pegged as the female lead’s obedient doglicker. Or so the story initially wanted…Unleashing the ‘Slack Off System’, Jiang Chen flips the script! Each act of slacking off spectacularly rewards him. Doglicking duties? Jiang Chen smirks at the thought. “Not in a million realms,” he declares.As the system chimes melodically, rewards rain down like immortal gifts:Ding, for successfully slacking off, you receive: the Emperor Weapon, All-Heaven Mirror!’Ding, another round of slacking off earns you: the Immortal Technique, Great Daluo Heaven!’Ding, for successfully slacking off you received: Immortal Emperor Cultivation!’But wait, there’s a twist in the tale! The world around Jiang Chen starts to unravel in the most unexpected ways.The character settings of the female leads have all collapsed.Junior Sister Ye Qingcheng: ‘I can only repay your life-saving grace with my body!’Cold and aloof master: ‘Disciple, I allow you to defy your master.’