高调唱情歌低调哼小曲
[gāo diào chàng qíng gē dī diào hēng xiăo qŭ]
'Gao Diao Chang Qing Ge Di Diao Hen Xiao Qu', translates into singing love songs openly (or high-pitch/audibly) while humming tunes quietly. In other words, it describes expressing love overtly but also cherishing little private things within oneself quietly.