喜新厭舊

lit. to like the new, and hate the old (idiom); fig. enamored with new people (e.g. new girlfriend), bored with the old

to be fond of / to like / to enjoy / to be happy / to feel pleased / happiness / delight / glad

abbr. for Xinjiang 新疆[Xin1 jiang1] or Singapore 新加坡[Xin1 jia1 po1] / surname Xin

new / newly / meso- (chemistry)

(bound form) to loathe; to be fed up with / (literary) to satiate; to satisfy

old / opposite: new 新 / former / worn (with age)