This Nerd Suddenly Become Powerful

As a hardcore homeboy, Chen Changan never expected to find himself transmigrated to a fantasy world filled with monsters and demons. But with his newly-acquired invincible field, he’s determined to stay put and become an immortal before leaving. In his boredom, he takes on a few disciples and accidentally turns them into powerful figures, causing chaos throughout the world. His offhand quotes from classic Chinese texts become the most coveted and powerful spells in existence, sought after by all manner of supernatural beings. And with a few plots of land, he can grow the elixir of life itself. As the world goes mad for his power, anyone foolish enough to enter his invincible domain is quick...