The Spirit Cat and the Unclean Things in the Neighboring Village

In the neighboring village, Mrs. Wang Er'so once raised a big black cat. It is said that when the sun sets, it can see the unclean things, and the people in the village all call it the spirit cat.
One summer day in a certain year, Mrs. Wang Er'so's son, the seven-year-old boy, went swimming in the small river by the village after school in the afternoon. It wasn't until it got dark that he returned home. But what made Mrs. Wang Er'so puzzled was that since the son entered the house, the big black cat in the house became restless and meowed towards the son, "Meow... meow... meow...". Mrs. Wang Er'so thought it was hungry, threw it some minced meat, and then went to rest. In the middle of the night, suddenly she was woken up by the meowing of the big black cat.After listening for a while, she felt that the cat's meowing was very unusual, so she quickly got out of bed and followed the meowing of the black cat to the yard to see what was going on.

At that time, the moon was still very bright, illuminating the yard brightly. By the moonlight, she saw that the black cat was fighting with something. She saw that it stretched out its front paws and lunged forward fiercely, but there was nothing in front of it. Seeing this, Mrs. Wang Er'so took a deep breath, knowing that the black cat must have seen the unclean thing and was fighting with that unclean thing.She didn't care about being scared anymore, quickly ran back to the kitchen, carried a basin of water for washing the pot, and splashed it in the direction where the black cat was fighting. Then she saw that the black cat became calm. Maybe it was because it was too tired from fighting just now, and then lay on the ground, neither meowing nor moving. Mrs. Wang Er'so used a flashlight to shine all over the yard and found many wet human footprints on the ground, knowing that it must be that her son brought the water ghost back home when he went swimming in the river,which caused the black cat to fight with it. Fortunately, she used the water for washing the pot to drive it away, otherwise the black cat could hardly beat it, and maybe its soul would also be hooked away.
Since this one thing happened, the villagers all knew that the black cat in her family could see the unclean things. No matter which villager's home had something strange happen, as long as they brought the black cat in her home over, it could definitely drive away those unclean things. In a old man's home in the village, it once was not clean. Every night around about o'clock, when the people in the old man's home were about to go to bed, the dog in the yard would bark wildly, and the chickens in the henhouse also ran out of the nest and scurried around in the yard restlessly.After a while, the door of the sleeping room made a thumping sound. The old man's partner was scared to cover her head with the quilt and didn't dare to move. The old man had a big courage, so he got out of bed and tiptoed to the door to see what was going on. After he opened the door and came to the yard to look carefully, he didn't see anything strange. But strangely, for several consecutive nights, the old man's yard had not been quiet. The old man had no way, so he had to bring the black cat from Mrs. Wang Er'so's home to drive away the evil. Strangely enough, after the black cat came to the old man's home, the old man's yard really became quiet.