Born to Be Invincible: I Am the Ancestral Dragon. If You Don't Obey, Come and Beat Me.

When the doomsday comes, Guyang waits for death. When he opens his eyes, he travels to a fantasy world. He actually has the body of a real dragon and can practice peacefully? How is that possible? Isn't it a waste to learn physical chemistry in middle and high school? Mononitrate, disulfonate, and charcoal, add some sugar, Big Ivan, technology changes the world, big sniper settles everything...