The weasel is crying. Which novel is it?

The weasel's sadness comes from my years as a teacher of Yin and Yang. According to relevant public information, The Years when I was a Teacher of Yin and Yang is a supernatural urban novel created by Cui Zouzhao. It mainly tells the story that Cui, the protagonist, went to learn from his teacher more than half a step after his death, and learned Sanqingshu under the guidance of master Wei and was resurrected.