向曾经的稚嫩挥手再见
[xiàng céng jīng de zhì nèn huī shŏu zài jiàn]
'Waving goodbye to my naivety.' As we grow older and face real-life issues head-on, many of us look back on our former self - perhaps more naive and less experienced - with fondness and maybe relief for moving forward in life; thus, using this kind of username implies growth in personal development, having overcome past immaturity.