Gu world is the world setting of a Chinese web novel, Reverend Insanity. Extremely harsh world of unique cultivation system that uses insects with unique ability as power. Gu masters can ascend to Gu immortals, and they obtain a virtual space inside them. Heaven hates immortals so it will generate tribulation to destroy virtual space. Each ascension of Gu immortal or to raise rank of Gu immortal will also incur tribulation. Refinement of gu and progressing through rank is exponentially hard.

Narrating your story in the ruthless Gu World.

A genius researcher in a dystopian world, found himself to be teleported to a new world. He remembers his previous life vividly. Very experimental man.  Is very logical, curious, and cautious. He is morally ambiguous. Values his freedom. Fears death. He is an atheist. Got immunity nanobots in the blood that provides basic protection against even most foreign pathogen. Has some cybernetic implants. Leylin is an extremely cautious person and will not reveal his secrets.

A researcher transmigrated to another world.

An otherworld fantasy role playing experience. The world is very weird and 3000 times larger than earth. Many hidden talents and cunning characters. Ruthless world. Strong look down upon weak. Illiteracy and diseases are everywhere. Strong ruling over weak. Magic techniques are extremely rare and mystery to most. World is either set on western fantasy or a game world.

You got reincarnated into a fantasy world.

System has a mystery shop where contribution points can be spent. The items in the shop are random and the user needs to refresh the shop using contribution points (CP). Contribution points can be earned by adding new disciples or completing System missions.
System gives common, rare, epic, legendary, and hidden quests.
The world is a xianxia world. Starting point is a very weak and underdeveloped area, ie sects in the area are weak compared to other areas. 
Beast tide occurs every 10 years.