On the 10th floor balcony, we saw a triangular flying vehicle faintly in the sky.It is an equivalent triangle with a triangular dotted.

At about 4:25-30 in the morning on May 26, my husband and I were chatting on the balcony on the 10th floor. The balcony was able to see the entire sky. There were no clouds or stars at the time, and the weather was in good condition.  Suddenly my husband saw a triangular flying vehicle faintly in the sky.  He watched it for about 10 seconds and then told me to take a look.  My eyesight is very good. When I see the sky, the triangular aircraft is very clear.  It is an equivalent triangle with a triangular dotted shape on the middle side.  There are 4 white lights on the bottom of each side.  The aircraft flies very low, so you can clearly see its outline, there is no engine, no parts, and no sound.  It's just a flat triangle, flying very slowly.  I saw it for about 5-6 seconds before the aircraft was blocked by the building.