During my twenty years in the mountains, my master only taught me one thing: line reading. Human life is like a thread, pulled from birth to death and woven into a web. Those who are disconnected will die - this is the rule set by Tianji. But the master chose to use the forbidden technique of "Lu Ban Shu" to cut off his own life and save a person who should have lost his life. The price was "lack of one skill", and he was forever frozen in the scene thirty years ago. On the day we came down the mountain, Master said: Someone is waiting for you on this trip to the mountain. I set up a fortune-telling stall to find out who Master saved back then. It turned out that the first guest was a woman looking for a son - the line on her life line was exactly the same as the broken page in the master's manuscript. Later I discovered that the person who cut my master's thread was named Ye. In the old case of "no such child found" thirty years ago, the only child registered was also named Ye. My name is Ye Qing. Who is the person who took my lifeline? ——Every hexagram has its origin; every broken thread is a murder case.