Visions of Heaven and Earth, Ghost Moon Descending to Earth

This is my dream about an unknown life form, like black fog, with consciousness. At first, towards the evening, I looked up from under an eaves. There was something like a moon, very big, spinning around the middle point in the sky. I didn't pay attention at first sight, but it seemed to be spinning very fast, so I took another look. It was spinning really fast, and I seemed to realize that I was looking at it. There was an old man next to me, someone I knew. I was at the door of her house. Then the thing like a huge moon turned into a contracting spherical black mist as big as a house. There was a loud sound when it contracted. It also dropped to a height of more than a hundred meters, as if it was looking for me. Then I avoided it, and after a while it seemed to have gone away, so I went home. When I got to the yard in front of my house, I met a tabby cat. It kept running towards me and biting me. I was very scared, so I kept throwing it away and kept running towards me again. Then I smashed it into the ground and it was fine. Then a car came from the left. I thought it was getting dark. The car was also black and I didn't recognize it, so I got scared and hurried to the door. It turned out that my cousin and brother-in-law came to send me congratulations, saying that they had given birth and gave me something. Then I woke up. The spherical black mist was not a simple ball. Although it was transparent, it also had a very special shape, like a heart that contracts and expands.