cliff of life and death!
the place where a saint buried his bones, he liked to be quiet before his death, so he set up a big array in his own place, branded his way and method, interwoven and formed his unique rules. In this place, no one can fly in the air, and no living creature can make noise again. Any living creature fighting here will be suppressed by his Tao and Dharma. The yuan spirit will be suppressed, and the air sea will be frozen to prevent disturbing the peace of this place.
of course, if there are practitioners who can break through the Tao and Dharma left...