在你左右时刻守候在你前后如影随身
[zài nĭ zuŏ yòu shí kè shŏu hòu zài nĭ qián hòu rú yĭng suí shēn]
It translates as Guarding You All Around Like Your Shadow. The creator wants others (mostly special ones) to realize he/she is nearby, watching and protecting them, even if unacknowledged, expressing selflessly devotion or adoration.