describes a person that is looking pale and sickly; literally 'green face and white lips'
Definitions (粵典–words.hk)
語句
面色蒼白、嘴唇冇血色 to look ghastly; to look ill; pale-faced
你邊度唔舒服啊?面青口唇白嘅?
你边度唔舒服啊?面青口唇白嘅?
nei5 bin1 dou6 m4 syu1 fuk6 aa3? min6 ceng1 hau2 seon4 baak6 ge2? What's wrong with you? You face and lips are so pale.