At the Beginning, I Realized Enlightenment in a Dream, and the Master of Cultivating Immortals Was Actually on Campus

My name is Su Yi, I am an ordinary freshman. I was ordinary until an old man broke into my dream In my dream, I saw an immortal holding a sword... Since then, my life has changed. At the age of 19, his merits are complete and he is ranked among the immortals! Wearing a purple Taoist robe, he slayed demons on campus, and obtained three magic weapons from the ancestral master, making him invincible in the world! One sword cuts through the gate of ghosts. If this sword stands, all demons will stop!