If anyone walked towards the Slytherin common room at this time, they would see Draco Malfoy slowly walking in the cellar corridor lit with dim yellow lights.
Draco's heartbeat hadn't calmed down yet. As soon as he ran down from the first floor, the world turned red. Desperately red. Totally red. The boundless red mud, with no one coming to rescue. It was as red as the blood on the ground next to his father's body, like the fire at Hogwarts Castle, and like the red light in Potter's eyes when he cursed himself angrily, the curse that was fiercely accompanied by a ruthless curse. He seemed to be stuck in the bloody pile of corpses on the battlefield, sinking deeper and deeper, and no one could pull him out.
Draco shuddered as he finally touched the cold doorknob. Taking a deep breath, he recited the password and stopped his hand on the door handle. Malfoys are never intimidated by difficulties - no matter what they are. All Malfoys had to do was analyze the problem and then solve it.