Invisible Security Guard - Chapter 67

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.

During the first known year, a magical mountain descended into the world from the realm of the Gods. Carved on this enormous mountain was a message: ‘Heaven Prevails’…

After the Grand Descent, a name that was given to the descending of the mountain, the Three Great Sages made their ways to Mystic Mountain where they learned to harvest what we now call magic, establishing the Mystic Cults and eighty-one sacred shrines to help aid mankind with the cult’s mystic powers against the eternal fight to the death with demons.

- Description from Novelupdates

Apocalypse befell, and roommates performed a skyward ritual.As the fog descended, the Book of Blood Spirit appeared in the hands of all survivors, and only those with a Contract monster could survive.Su Han directed his gaze to the neighbor who had already mutated and twisted, silently pulling out a gleaming fruit knife...Grotesque meat corpses, giant spiders with gaping mouths, eyeballs enveloping the city, one-eyed sharp-toothed hand monsters...Civilization fell, cities shattered, and all humans became meat for the monsters. There was only one way to survive:Use monsters to fight monsters.

Lin Chen, a poor boy from a model agency, occasionally inherited a peerless doctor. From then on, he has been unparalleled in medicine, able to resurrect the world and help the world.

He contends with the sun and the moon, and takes his life to heaven and earth. And all this began when that sexy and beautiful model gave him an ancient book…

- Description from MTL

Lin Xuan transmigrated into a world where demon beasts rampaged. He became one of the lowest ranking wasteland reclaimers in the Germinal Organization to explore the mystic realms.

The Zero Realm mystic realm was the Giant Rock Cave. The First Realm mystic realm was the Demon Ant Nest. The Second Realm mystic realm was the Tree King Sea.

[Congratulations on seizing a Gold Swallowing Lizard as one of your avatars for gaining more experience. Do you want it to begin its training?]

[Your current location is first floor of the Giant Rock Cave. (1 coin per minute. 5 exp points per minute)]

[Gold Swallowing Lizard has been training for 4 hours. Do you wish to collect its experience?]

Lin Xuan’s eyes were wide open. He was well-versed in how this worked. This was similar to the AFK games that he played in his previous world.

As such, he began his comfortable journey of becoming the strongest.

Up until one point, the Germinal Organization discovered that he was abnormal and decided to deal with him. It only then did Lin Xuan realize that even Seventh Realm fighters and the managers of the organization were inferior to him.