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1990年6月23日凌晨3时02分,一组由众多发光点组成的龙蛇形状的不明飞行物经过河南省开封市夜空,并落下不明残片,成为轰动一时的开封6·23飞碟事件。这
At 02:02 on June 23, 1990, a group of dragon-serpent-shaped UFO with many light-emitting spots passed through the night sky of Kaifeng City in Henan Province and left unidentified fragments and became a sensational event of Kaifeng 6-23 UFO. This