少年心动99次少女心跳99次
[shăo nián xīn dòng 99 cì shăo nǚ xīn tiào 99 cì]
The username implies that young love and affection between a boy and a girl have caused their hearts to flutter 99 times (a significant number indicating many emotions). This evokes scenes of adolescent romance filled with anticipation and nervous excitement.