Thirty miles east of Lu Town, there is a little-known old town called "Huaiyin Town". Most of the people in the town are hardworking people who work at sunrise and rest at sundown. However, the old locust tree with three people hugging each other at the entrance of the town always has some indescribable weirdness. In the autumn of the thirteenth year of the Republic of China, Shen Jingshan, the medicine shop owner in the town, suddenly disappeared, leaving only a room full of medicinal incense and half-burned candles. Some people said they saw him walking towards the locust tree in the middle of the night, while others said they heard a woman crying under the old locust tree. Zhou Mingyuan, a teacher in the town, was originally a scholar who did not believe in ghosts and gods, but he was haunted by a diary left by Shen Jingshan. The handwriting in the diary became more and more scrawled, and the last few pages were full of nonsense about "the locust flowers are blooming" and "she is laughing". The more Zhou Mingyuan wanted to find out the whereabouts of Shen Jingshan, the more he felt that the old town was like cotton wool soaked in water, so heavy that it made people breathless. Those neighbors who were kind during the day became evasive at night. He didn't know that the moment he opened the diary, he had walked into the darkness that had been hidden in Huaiyin Town for decades.
