Hypnosis, as you said, should be a skill nightmare (? I forgot the specific name. After this skill is released to a target, the target falls into a deep sleep and loses a little blood every second. If another unit tries to Ping A unit affected by a nightmare, the attacked unit will be hypnotized and the first sleeping unit will wake up. So, if your teammate is the source of pain, release nightmares to an enemy hero, and the enemy hero falls asleep, you run to A, the sleeping hero (right click or A+ left click), and you fall asleep. This is generally Xiao Bai's behavior, and sleeping backwards is generally scolded. Please pay attention in the future. In addition, hypnotized units can use skills to wake up without falling asleep. Therefore, nightmares are generally used as a skill to decide people first, and then another successful hero will faint, so as to achieve the goal of controlling opponents for a long time and with high precision. For example, the source of pain+the source of pain of the white tiger+the source of pain of the fire girl+the source of pain of torturing the soul+various stair-stepping skills.