Invincible Within My Domain

What kind of shabby book can only make me invincible in a fixed small area?! Cultivating can increase the range?! In this terrifying world where ferocious beasts run rampant and monsters come forth in large numbers, this senior brother, I will resolutely not leave the sect unless necessary! Junior sister, don’t cause trouble anymore! Senior brother is going to retreat! How about… you let them come up the mountain?