UFO Sighting in SHENZHEN, on 2017-08-18 00:00:00 - Dark object appears near shenzhen

I saw an ufo dark shadow - not moving appears while i was heading to shenzhen airport from hong kong at around 515am in the moring. the sky was blue without clouds. for sure it was not a reflection of the mirror nor from other cars as i have lowered the window. object stayed in the same area for near 8 mins. and disappeared thereafter.