What was the rocket-like UFO found in Zhenyuan County, Gansu Province in 1987?

In the summer of 1987, a UFO was found flying in the air in Zhenyuan County, Gansu Province. It was sunny and sunny, and there were several white clouds floating in the sky. You Zhilong and his younger brother are playing at the root of the earth wall in their hometown yard. The younger brother suddenly shouted, "Brother, look at that!" You Zhilong looked in the direction pointed by his younger brother and found a flying UFO in front of the mound. Its flight is extremely smooth, the speed is very uniform, about 2 ~ 3 meters from the ground, and it doesn't make any sound. The flying object flies at an angle of 45 from the northwest. When flying to the upper right of the two children, you can clearly see that it is rocket-shaped. The arrow is conical, with a length of .1m. The arrow body is cylindrical, with a length of .2m. The tail of the arrow reaches Flametail with a length of .2m. * * * .5m. The diameter of the arrow body is .12m. The tail of the arrow has four wings that control the flight direction like a real rocket. The surface of the arrow body is light orange, and the flame is orange red. The flame is ejected from the circular hole in the center of the tail, and the ejection is even and slow, not as violent as the real mega launch. You Zhilong stepped back a few steps and saw the flying object turn to the southeast direction of 6, and disappeared in less than 1 minute. This speed is incredible, and the flame is bluish white when accelerating.

from the analysis of these strange phenomena, it seems that the shape of UFO has another rocket shape.