时光请善待我的大宝宝
[shí guāng qĭng shàn dài wŏ de dà băo băo]
Here, '时光' means 'time'. The user seems to be hoping time could be good to someone he/she regards as the most important one, calling this person his/her 'big baby'. It reflects love and protection for that specific person, probably a close friend or partner, wishing them to grow up well without too many setbacks.