影子一直是我最忠实的朋友
[yĭng zi yī zhí shì wŏ zuì zhōng shí de péng yŏu]
It means 'Shadow has always been my most loyal friend'. This phrase can be metaphorical - in some contexts it indicates loneliness (only having the shadow as a companion), while on other hand can also indicate cherishing everything life gives because every part of one's life belongs to oneself as like the shadow follows itself.