哼着那首曾经的半情调唱着那首曾经的半情歌
[hēng zhe nèi shŏu céng jīng de bàn qíng diào chàng zhe nèi shŏu céng jīng de bàn qíng gē]
Suggests that this user likes to recall past moments with melodies; it seems like singing half-hearted love songs about once intense romantic experiences. It conveys nostalgia for what used to be, and a touch of unfulfilled sentiment.