nothing remains the same (idiom); change beyond recognition
Definitions (粵典–words.hk)
語句
變化大得好緊要,同原先個樣完全唔同;一般帶有負面意思 to have changed beyond recognition, especially in an undesirable way
喺外國生活咗十年,返到嚟香港,發現呢個地方已經面目全非。
喺外国生活咗十年,返到嚟香港,发现呢个地方已经面目全非。
hai2 ngoi6 gwok3 sang1 wut6 zo2 sap6 nin4, faan1 dou3 lai4 hoeng1 gong2, faat3 jin6 ni1 go3 dei6 fong1 ji5 ging1 min6 muk6 cyun4 fei1. Returning after living overseas for ten years, I realised that Hong Kong was no longer the place I used to know.
Definitions (Wiktionary)
phrase, derogatory, idiomatic, usually
to have a radically different appearance (due to changes); to change beyond recognition