低下头是你的甜蜜抬起头是你的气息
[dī xià tóu shì nĭ de tián mì tái qĭ tóu shì nĭ de qì xī]
This nickname implies that the person's feelings and thoughts are all around their love for someone, symbolizing that no matter when they lower or raise their head, it's still about that person. It describes an intense and omnipresent love.