In a High-Martial World, I Activated the Oriental Pearl Defense Tower!

[Behind-the-scenes style] [Invincible protagonist] Ling Feng transmigrated into a high-martial world and watched as monsters descended. Then he unexpectedly discovered that he had activated the Landmark Dispatch System! It could activate buildings to defend against monsters! From the start, he activated the Oriental Pearl Tower, turning it into a laser defense tower, and killed the Insect King with a single laser blast! “Then let the monsters learn what it means to trespass on our Great Xia: no matter how far away, they will be punished!”