默默守护你静静陪着你
[mò mò shŏu hù nĭ jìng jìng péi zhe nĭ]
'Silently protecting you and silently accompanying you', indicating the quiet dedication or admiration towards another one. Usually, this type of nickname shows one's desire for keeping a watchful eye on someone while staying unobserved as much as possible out of respect for that person's space or privacy.