Self-Cause and Effect

The world is drying up, demons are coming, and the monks are struggling. On that day, Master Jun Xuan died trying to save the people, but he still couldn't escape destruction in the end. When he opened his eyes again, he had returned to a thousand years ago. The sect was still standing, the sect had not been stained with blood, and nothing had happened yet. In this life, he carries the memory of his past life, knows the disasters in the future, and even knows what opportunities are about to appear in this world. Can he get a head start and take advantage of the situation to push his destiny in a different direction? However, as he went deeper and deeper, he discovered that the destruction of Qingyun Sect was far more than a simple invasion by foreign enemies. What's even more frightening is that the truth buried deep in the depths actually implicates himself... Cause and effect are established, destiny is written. But what if the cause and effect itself is wrong?