What is the earliest recorded ufo in China's ancient books?

The earliest record of flying saucers is the ancient book Autumn of the Golden Sheep. The book says, "There are red and awn stars, which are cast in Liang Ying from the northeast and southwest. Three shots, then return, big, small, bright. " There are similar records in Pei Songzhi's Notes on the History of the Three Kingdoms, His Brief History and Ma's General Examination of Literature. It was in the autumn of 234 AD. A "star" that emits red light and comes and goes freely appears in the sky of Wuzhangyuan in the northwest. It came and went from northeast to southwest, and then disappeared. If you are a star, you can't "throw three shots and go back" or "make a fuss". According to records, it can fly freely, much like a flying saucer. Shen Kuo, a famous scientist in the Northern Song Dynasty, also recorded such a thing in his famous scientific work "On Meng Xi": "Yangzhou has a very big pearl and many gloomy days.