換湯不換藥 [换汤－换药]

Jyutping wun6 tong1 bat1 wun6 joek6
Pinyin huàn tāng bù huàn yào

Definitions (CC-CEDICT)
  1. different broth but the same old medicine (idiom); a change in name only
  2. a change in form but not in substance
Definitions (粵典–words.hk)
  1. 語句
    淨​係​改變​一樣​嘢​嘅​外型​或者​形式​，​但​係​內容​其實​係​一​樣​嘅​；​含​貶義
    (derogatory)to change the appearance or form but not the essence; to make superficial changes; literally: to change the decoction but not the medical ingredients
  2. 近義詞
    舊酒新瓶
  3. 參看
    換湯唔換藥
Definitions (Wiktionary)
  1. phrase, idiomatic
    to change only the form but not the content; same old stuff but with a different label