Cultivation Online by MyLittleBrother

Can someone explain what the game Cultivation Online or if you have any theories? I thought it may be an actual world and the previous reincarnation or a god or something gave the people of earth the opportunity to ascend their conscious to this world, but then when the MC recovers and practices and stuff, everything becomes nerfed. For example the movement technique the phoenix gave him and he couldnt even dodge a girl with a lower cultivation than himself? Also Im really curious on how strong his martial techniques he learned from the game are in the actual world. The only one he has used is the flying daggers and he said the speed is the same as paper airplanes which is significantly worse ccompared to CO. Normally in these types of novels when someone uses a technique in a lower realm the technique becomes even stronger and will do more damage but once he became a cultivator in the real world the amount of energy or qi and the strength he is able to use is similar to that of Volcanic age and Return of mount hua. they are both good but when he's inside CO the strength that he can use is like something similar to a martial Peak novel so i have absolutely no idea what CO is but i really dont want it to be obsolete to the story, i want it to be an actual place and the people he has met be actually out there