nothing remains the same (idiom); change beyond recognition
面 · 9 strokes
Depicts the outline of a face, with an eye (目) in the middle. In simplified Chinese 面 is also used to mean "noodles", while in traditional Chinese this meaning is written with a separate character 麵.
目 · 5 strokes
Pictograph of an eye.
全 · 6 strokes
Depicts jade (玉) that is entirely pure and flawless. Based on the original meaning "pure jade". The meaning later shifted to "complete" and "entire".
非 · 8 strokes
Depicts two people facing opposite directions.
老家多年没回，已经面目全非。
I haven't been back in years; my hometown is completely unrecognizable.