It was about 8:40pm. i went to the courtyard and look into the sky i saw an object with two bright red lights, all of a sudden i thought it was a flight, but it was not moving, it stucks in the sky, it was very far from the groud (far than a normal flight's altitude). i keep watching and realised that it was not a flight, helicopter or a drone. it was something strange. i went to my room and took my dslr and continously clicked suddenly the red light changed to green and flew far far away in just 3 or 4 seconds. it was not noisy, i can't hear any voice in it's motion, and found that it was an very ffast object. this is the first time i saw a strange object in the sky.