媳妇是什么空气空气是什么我命
[xí fù shì shén me kōng qì kōng qì shì shén me wŏ mìng]
A playful way expressing extreme attachment to one's beloved ('wife'), saying 'my wife defines everything in my life, including the invisible but vital part - air'). By comparing the wife/husband with life-necessity air, it indicates the indispensable role this loved one plays within their life.