「炒冷飯」

(pos:動詞)
<explanation>
yue:指喺實質內容不變嘅情況下，重覆做一啲已經做過嘅事、或者講一啲已經講過嘅話題、推出一啲已經推出過嘅產品；略帶貶義
eng:to beat a dead horse; to repackage old things or concepts and offer them as new; literally: to stir-fry cold rice
<eg>
yue:啲師奶劇成日都炒冷飯，同一條橋改下個班底就當新劇！ (di1 si1 naai1 kek6 seng4 jat6 dou1 caau2 laang5 faan6, tung4 jat1 tiu4 kiu2 goi2 haa5 go3 baan1 dai2 zau6 dong3 san1 kek6!)
eng:The producers of these soap dramas are just beating a dead horse—all these supposed new titles are merely repetitions of the same old plot under new casts.