Player Invasion

Lin Tian, a successful software developer, is thrown into confusion when a mysterious girl claims he is the descendant of an immortal.    
Struggling with disbelief, he is taken to the Reincarnation Small World, a realm filled with ancient ruins and forgotten power.    
Grandpa left behind a little world of reincarnation?    
Inviting endless invaders from heaven and earth?      
How to resist them became the biggest problem in Lin Tian's mind.  
In order to live up to his ethics and inherit the ancestral business, Lin Tian decided to transform the small world of reincarnation into a game world, and defeat the vicious aggressors with human strength！  
Can a mere coder shoulder the responsibility of fending off otherworldly threats?